diff --git a/app/Enums/Gender.php b/app/Enums/Gender.php
index 024f70b..8aaaa24 100644
--- a/app/Enums/Gender.php
+++ b/app/Enums/Gender.php
@@ -8,14 +8,14 @@ enum Gender: string
 {
     case Male = 'male';
     case Female = 'female';
-    case Other = 'other';
+    // case Other = 'other';
 
     public function label(): string
     {
         return match ($this) {
             self::Male => __('enums.gender.male'),
             self::Female => __('enums.gender.female'),
-            self::Other => __('enums.gender.other'),
+            // self::Other => __('enums.gender.other'),
         };
     }
 
@@ -24,7 +24,7 @@ enum Gender: string
         return match ($this) {
             self::Male => 'info',
             self::Female => 'pink',
-            self::Other => 'gray',
+            // self::Other => 'gray',
         };
     }
 
@@ -33,7 +33,7 @@ enum Gender: string
         return match ($this) {
             self::Male => 'heroicon-o-user',
             self::Female => 'heroicon-o-user',
-            self::Other => 'heroicon-o-users',
+            // self::Other => 'heroicon-o-users',
         };
     }
 }
diff --git a/app/Exports/EmployeesExport.php b/app/Exports/EmployeesExport.php
index d2f74fa..5422e37 100644
--- a/app/Exports/EmployeesExport.php
+++ b/app/Exports/EmployeesExport.php
@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace App\Exports;
 
 use App\Models\Employee;
+use App\Support\Countries;
 use Illuminate\Database\Eloquent\Builder;
 use Maatwebsite\Excel\Concerns\FromQuery;
 use Maatwebsite\Excel\Concerns\WithHeadings;
@@ -39,7 +40,7 @@ class EmployeesExport implements FromQuery, WithHeadings, WithMapping
         return [
             'Employee Number',
             'Full Name',
-            'National ID',
+            'Nationality',
             'Gender',
             'Birth Date',
             'Phone',
@@ -63,7 +64,7 @@ class EmployeesExport implements FromQuery, WithHeadings, WithMapping
         return [
             $employee->employee_number,
             $employee->full_name,
-            $employee->national_id,
+            Countries::name($employee->national_id) ?? $employee->national_id,
             $employee->gender?->value,
             $employee->birth_date?->toDateString(),
             $employee->phone,
diff --git a/app/Filament/Resources/Employees/Schemas/EmployeeForm.php b/app/Filament/Resources/Employees/Schemas/EmployeeForm.php
index 230f38a..9eefe79 100644
--- a/app/Filament/Resources/Employees/Schemas/EmployeeForm.php
+++ b/app/Filament/Resources/Employees/Schemas/EmployeeForm.php
@@ -5,10 +5,11 @@ namespace App\Filament\Resources\Employees\Schemas;
 use App\Enums\EmploymentStatus;
 use App\Enums\Gender;
 use App\Filament\Support\HrForm;
+use App\Support\Countries;
 use Filament\Forms\Components\DatePicker;
 use Filament\Forms\Components\Select;
-use Filament\Forms\Components\TextInput;
 use Filament\Forms\Components\Textarea;
+use Filament\Forms\Components\TextInput;
 use Filament\Schemas\Components\Tabs;
 use Filament\Schemas\Components\Tabs\Tab;
 use Filament\Schemas\Schema;
@@ -30,24 +31,32 @@ class EmployeeForm
                                     ->imageEditor(),
                                 TextInput::make('employee_number')
                                     ->label(__('hr.fields.employee_number'))
-                                    ->required()
-                                    ->maxLength(50)
-                                    ->unique(ignoreRecord: true),
+                                    ->disabled()
+                                    ->dehydrated(false)
+                                    ->visibleOn('edit'),
                                 TextInput::make('full_name')
                                     ->label(__('hr.fields.full_name'))
                                     ->required()
                                     ->maxLength(255),
-                                TextInput::make('national_id')
+                                Select::make('national_id')
                                     ->label(__('hr.fields.national_id'))
-                                    ->maxLength(50),
+                                    ->options(fn (): array => Countries::options())
+                                    ->searchable()
+                                    ->native(false)
+                                    ->default(Countries::default())
+                                    ->required(),
+
                                 Select::make('gender')
                                     ->label(__('hr.fields.gender'))
                                     ->options(Gender::class)
                                     ->required()
                                     ->native(false),
+                                    
                                 DatePicker::make('birth_date')
                                     ->label(__('hr.fields.birth_date'))
-                                    ->required(),
+                                    ->required()
+                                    ->native(false),
+
                                 TextInput::make('phone')
                                     ->label(__('hr.fields.phone'))
                                     ->tel()
diff --git a/app/Filament/Resources/Employees/Schemas/EmployeeInfolist.php b/app/Filament/Resources/Employees/Schemas/EmployeeInfolist.php
index 7860487..543e186 100644
--- a/app/Filament/Resources/Employees/Schemas/EmployeeInfolist.php
+++ b/app/Filament/Resources/Employees/Schemas/EmployeeInfolist.php
@@ -9,6 +9,7 @@ use App\Enums\Gender;
 use App\Models\Employee;
 use App\Models\Vacation;
 use App\Services\Employee\EmployeeStatisticsService;
+use App\Support\Countries;
 use Filament\Infolists\Components\ImageEntry;
 use Filament\Infolists\Components\TextEntry;
 use Filament\Schemas\Components\Section;
@@ -42,6 +43,7 @@ class EmployeeInfolist
                                             ->label(__('hr.fields.full_name')),
                                         TextEntry::make('national_id')
                                             ->label(__('hr.fields.national_id'))
+                                            ->formatStateUsing(fn (?string $state): string => Countries::name($state) ?? $state ?? '—')
                                             ->placeholder('—'),
                                         TextEntry::make('gender')
                                             ->label(__('hr.fields.gender'))
@@ -153,16 +155,16 @@ class EmployeeInfolist
                                         TextEntry::make('leave_balance_taken')
                                             ->label(__('hr.fields.days_taken'))
                                             ->state(fn (Employee $record): int => app(EmployeeStatisticsService::class)->summary($record)->vacationTaken)
-                                            ->suffix(' ' . __('hr.messages.days_suffix')),
+                                            ->suffix(' '.__('hr.messages.days_suffix')),
                                         TextEntry::make('leave_balance_remaining')
                                             ->label(__('hr.fields.days_remaining'))
                                             ->state(fn (Employee $record): int => app(EmployeeStatisticsService::class)->summary($record)->vacationRemaining)
-                                            ->suffix(' ' . __('hr.messages.days_suffix'))
+                                            ->suffix(' '.__('hr.messages.days_suffix'))
                                             ->color('success'),
                                         TextEntry::make('leave_balance_total')
                                             ->label(__('hr.fields.annual_allowance'))
                                             ->state(fn (): int => (int) config('hr.annual_leave_days'))
-                                            ->suffix(' ' . __('hr.messages.days_suffix')),
+                                            ->suffix(' '.__('hr.messages.days_suffix')),
                                     ])
                                     ->columns(3),
                                 Section::make(__('hr.sections.upcoming_approved_leave'))
diff --git a/app/Filament/Resources/Employees/Tables/EmployeesTable.php b/app/Filament/Resources/Employees/Tables/EmployeesTable.php
index ea9282c..a7a57ed 100644
--- a/app/Filament/Resources/Employees/Tables/EmployeesTable.php
+++ b/app/Filament/Resources/Employees/Tables/EmployeesTable.php
@@ -4,9 +4,11 @@ namespace App\Filament\Resources\Employees\Tables;
 
 use App\Enums\EmploymentStatus;
 use App\Enums\Gender;
+use App\Exports\EmployeesExport;
+use App\Filament\Support\ExportExcelAction;
 use App\Models\Department;
 use App\Models\Employee;
-use App\Filament\Support\ExportExcelAction;
+use App\Support\Countries;
 use Filament\Actions\BulkAction;
 use Filament\Actions\BulkActionGroup;
 use Filament\Actions\DeleteBulkAction;
@@ -37,6 +39,7 @@ class EmployeesTable
                     ->sortable(),
                 TextColumn::make('national_id')
                     ->label(__('hr.fields.national_id'))
+                    ->formatStateUsing(fn (?string $state): ?string => Countries::name($state) ?? $state)
                     ->searchable()
                     ->toggleable(),
                 TextColumn::make('gender')
@@ -126,7 +129,7 @@ class EmployeesTable
             ])
             ->toolbarActions([
                 BulkActionGroup::make([
-                    ExportExcelAction::bulk('exportSelected', \App\Exports\EmployeesExport::class, 'employees.xlsx'),
+                    ExportExcelAction::bulk('exportSelected', EmployeesExport::class, 'employees.xlsx'),
                     BulkAction::make('changeDepartment')
                         ->label(__('hr.actions.change_department'))
                         ->icon('heroicon-o-building-office-2')
diff --git a/app/Http/Middleware/SetLocale.php b/app/Http/Middleware/SetLocale.php
new file mode 100644
index 0000000..d93bc5a
--- /dev/null
+++ b/app/Http/Middleware/SetLocale.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class SetLocale
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  Closure(Request): (Response)  $next
+     */
+    public function handle(Request $request, Closure $next): Response
+    {
+        if (! $request->user()) {
+            return $next($request);
+        }
+
+        $locale = $request->user()->locale;
+
+        if (isset($locale)) {
+            app()->setLocale($locale);
+        }
+
+        return $next($request);
+    }
+}
diff --git a/app/Models/Employee.php b/app/Models/Employee.php
index 08d6183..75ff2dc 100644
--- a/app/Models/Employee.php
+++ b/app/Models/Employee.php
@@ -48,6 +48,38 @@ class Employee extends Model
         ];
     }
 
+    protected static function booted(): void
+    {
+        static::saving(function (Employee $employee): void {
+            if (blank($employee->employee_number)) {
+                $employee->employee_number = static::generateUniqueEmployeeNumber();
+            }
+        });
+    }
+
+    public static function generateUniqueEmployeeNumber(): string
+    {
+        $prefix = (string) config('hr.employee_number.prefix', 'EMP-');
+        $padding = (int) config('hr.employee_number.padding', 5);
+
+        $latestNumber = static::withTrashed()
+            ->where('employee_number', 'like', $prefix.'%')
+            ->pluck('employee_number')
+            ->map(function (string $number) use ($prefix): ?int {
+                if (! preg_match('/^'.preg_quote($prefix, '/').'(\d+)$/', $number, $matches)) {
+                    return null;
+                }
+
+                return (int) $matches[1];
+            })
+            ->filter()
+            ->max();
+
+        $next = ($latestNumber ?? 0) + 1;
+
+        return $prefix.str_pad((string) $next, $padding, '0', STR_PAD_LEFT);
+    }
+
     public function department(): BelongsTo
     {
         return $this->belongsTo(Department::class);
diff --git a/app/Providers/Filament/AdminPanelProvider.php b/app/Providers/Filament/AdminPanelProvider.php
index 590165a..b5b05cb 100644
--- a/app/Providers/Filament/AdminPanelProvider.php
+++ b/app/Providers/Filament/AdminPanelProvider.php
@@ -4,13 +4,15 @@ declare(strict_types=1);
 
 namespace App\Providers\Filament;
 
-use BezhanSalleh\FilamentShield\FilamentShieldPlugin;
-use App\Enums\NavigationGroup;
+use App\Enums\NavigationGroup as NavigationGroupEnum;
 use App\Filament\Pages\Dashboard;
+use BezhanSalleh\FilamentShield\FilamentShieldPlugin;
+use Filament\FontProviders\GoogleFontProvider;
 use Filament\Http\Middleware\Authenticate;
 use Filament\Http\Middleware\AuthenticateSession;
 use Filament\Http\Middleware\DisableBladeIconComponents;
 use Filament\Http\Middleware\DispatchServingFilamentEvent;
+use Filament\Navigation\NavigationGroup as FilamentNavigationGroup;
 use Filament\Panel;
 use Filament\PanelProvider;
 use Filament\Support\Colors\Color;
@@ -20,7 +22,6 @@ use Illuminate\Foundation\Http\Middleware\PreventRequestForgery;
 use Illuminate\Routing\Middleware\SubstituteBindings;
 use Illuminate\Session\Middleware\StartSession;
 use Illuminate\View\Middleware\ShareErrorsFromSession;
-use Filament\FontProviders\GoogleFontProvider;
 
 class AdminPanelProvider extends PanelProvider
 {
@@ -39,7 +40,14 @@ class AdminPanelProvider extends PanelProvider
                 'gray' => Color::Slate,
             ])
             ->font('Inter', provider: GoogleFontProvider::class)
-            ->navigationGroups(NavigationGroup::class)
+            ->navigationGroups(
+                collect(NavigationGroupEnum::cases())
+                    ->mapWithKeys(fn (NavigationGroupEnum $case): array => [
+                        $case->name => FilamentNavigationGroup::make()
+                            ->label(fn (): ?string => $case->getLabel()),
+                    ])
+                    ->all(),
+            )
             ->discoverResources(in: app_path('Filament/Resources'), for: 'App\Filament\Resources')
             ->discoverPages(in: app_path('Filament/Pages'), for: 'App\Filament\Pages')
             ->pages([
@@ -49,7 +57,7 @@ class AdminPanelProvider extends PanelProvider
             ->widgets([])
             ->plugins([
                 FilamentShieldPlugin::make()
-                    ->navigationGroup(NavigationGroup::System),
+                    ->navigationGroup(NavigationGroupEnum::System),
             ])
             ->middleware([
                 EncryptCookies::class,
diff --git a/app/Services/Import/EmployeeImportTransformer.php b/app/Services/Import/EmployeeImportTransformer.php
index a2cf999..ee62fb5 100644
--- a/app/Services/Import/EmployeeImportTransformer.php
+++ b/app/Services/Import/EmployeeImportTransformer.php
@@ -11,6 +11,7 @@ use App\Models\Department;
 use App\Models\Employee;
 use App\Models\Position;
 use App\Models\Shift;
+use App\Support\Countries;
 use Carbon\Carbon;
 use Illuminate\Support\Str;
 
@@ -22,9 +23,9 @@ class EmployeeImportTransformer
     public function toAttributes(EmployeeRowDto $dto): array
     {
         return [
-            'employee_number' => $dto->employeeNumber,
+            'employee_number' => $dto->employeeNumber !== '' ? $dto->employeeNumber : null,
             'full_name' => $dto->fullName,
-            'national_id' => $dto->nationalId,
+            'national_id' => $this->resolveNationality($dto->nationalId),
             'gender' => $this->resolveGender($dto->gender),
             'birth_date' => $this->parseDate($dto->birthDate),
             'phone' => $dto->phone ?? config('hr.default_phone'),
@@ -45,10 +46,6 @@ class EmployeeImportTransformer
     {
         $errors = [];
 
-        if ($dto->employeeNumber === '') {
-            $errors[] = 'Employee number is required.';
-        }
-
         if ($dto->fullName === '') {
             $errors[] = 'Full name is required.';
         }
@@ -65,22 +62,42 @@ class EmployeeImportTransformer
             $errors[] = "Shift \"{$dto->shift}\" was not found.";
         }
 
+        if ($dto->nationalId && $this->resolveNationality($dto->nationalId) === null) {
+            $errors[] = "Nationality \"{$dto->nationalId}\" was not found.";
+        }
+
         return $errors;
     }
 
     public function isDuplicate(EmployeeRowDto $dto): bool
     {
-        return Employee::query()
-            ->where(function ($query) use ($dto): void {
-                $query->where('employee_number', $dto->employeeNumber);
+        $hasEmployeeNumber = $dto->employeeNumber !== '';
+        $nationality = $this->resolveNationality($dto->nationalId);
 
-                if ($dto->nationalId) {
-                    $query->orWhere('national_id', $dto->nationalId);
+        if (! $hasEmployeeNumber && $nationality === null) {
+            return false;
+        }
+
+        return Employee::query()
+            ->where(function ($query) use ($dto, $hasEmployeeNumber, $nationality): void {
+                if ($hasEmployeeNumber) {
+                    $query->where('employee_number', $dto->employeeNumber);
+                }
+
+                if ($nationality !== null) {
+                    $hasEmployeeNumber
+                        ? $query->orWhere('national_id', $nationality)
+                        : $query->where('national_id', $nationality);
                 }
             })
             ->exists();
     }
 
+    private function resolveNationality(?string $value): ?string
+    {
+        return Countries::resolve($value);
+    }
+
     private function resolveGender(?string $value): ?Gender
     {
         if ($value === null) {
diff --git a/app/Support/Countries.php b/app/Support/Countries.php
new file mode 100644
index 0000000..4bf5785
--- /dev/null
+++ b/app/Support/Countries.php
@@ -0,0 +1,124 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Support;
+
+class Countries
+{
+    public const DEFAULT = 'TM';
+
+    /**
+     * @return array<int, string>
+     */
+    public static function codes(): array
+    {
+        /** @var array{codes: array<int, string>} $config */
+        $config = config('countries');
+
+        return $config['codes'];
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    public static function options(?string $locale = null): array
+    {
+        $locale ??= app()->getLocale();
+        $options = [];
+
+        foreach (self::codes() as $code) {
+            $name = self::name($code, $locale);
+
+            if ($name !== null) {
+                $options[$code] = $name;
+            }
+        }
+
+        uasort($options, fn (string $a, string $b): int => strcasecmp($a, $b));
+
+        return $options;
+    }
+
+    public static function name(?string $code, ?string $locale = null): ?string
+    {
+        if ($code === null || $code === '') {
+            return null;
+        }
+
+        $code = strtoupper($code);
+        $locale ??= app()->getLocale();
+
+        $name = self::translation($code, $locale);
+
+        if ($name === null && $locale !== 'en') {
+            $name = self::translation($code, 'en');
+        }
+
+        return $name;
+    }
+
+    public static function isValid(?string $code): bool
+    {
+        if ($code === null || $code === '') {
+            return false;
+        }
+
+        return in_array(strtoupper($code), self::codes(), true);
+    }
+
+    public static function resolve(?string $value, ?string $locale = null): ?string
+    {
+        if ($value === null || trim($value) === '') {
+            return null;
+        }
+
+        $value = trim($value);
+        $upper = strtoupper($value);
+
+        if (self::isValid($upper)) {
+            return $upper;
+        }
+
+        $locale ??= app()->getLocale();
+
+        foreach (self::codes() as $code) {
+            $name = self::name($code, $locale);
+
+            if ($name !== null && strcasecmp($name, $value) === 0) {
+                return $code;
+            }
+        }
+
+        if ($locale !== 'en') {
+            foreach (self::codes() as $code) {
+                $name = self::name($code, 'en');
+
+                if ($name !== null && strcasecmp($name, $value) === 0) {
+                    return $code;
+                }
+            }
+        }
+
+        return null;
+    }
+
+    private static function translation(string $code, string $locale): ?string
+    {
+        $path = lang_path("{$locale}/countries.php");
+
+        if (! is_file($path)) {
+            return null;
+        }
+
+        /** @var array<string, string> $names */
+        $names = require $path;
+
+        return $names[$code] ?? null;
+    }
+
+    public static function default(): string
+    {
+        return self::DEFAULT;
+    }
+}
diff --git a/bootstrap/app.php b/bootstrap/app.php
index 7a2848f..be28e62 100644
--- a/bootstrap/app.php
+++ b/bootstrap/app.php
@@ -4,6 +4,7 @@ use Illuminate\Foundation\Application;
 use Illuminate\Foundation\Configuration\Exceptions;
 use Illuminate\Foundation\Configuration\Middleware;
 use Illuminate\Http\Request;
+use App\Http\Middleware\SetLocale;
 
 return Application::configure(basePath: dirname(__DIR__))
     ->withRouting(
@@ -12,7 +13,7 @@ return Application::configure(basePath: dirname(__DIR__))
         health: '/up',
     )
     ->withMiddleware(function (Middleware $middleware): void {
-        //
+        // $middleware->web(SetLocale::class);
     })
     ->withExceptions(function (Exceptions $exceptions): void {
         $exceptions->shouldRenderJsonWhen(
diff --git a/config/countries.php b/config/countries.php
new file mode 100644
index 0000000..b467ebf
--- /dev/null
+++ b/config/countries.php
@@ -0,0 +1,204 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'codes' => [
+        0 => 'TM',
+        1 => 'RU',
+        2 => 'KZ',
+        3 => 'UZ',
+        4 => 'TR',
+        5 => 'IR',
+        6 => 'AF',
+        7 => 'AZ',
+        8 => 'KG',
+        9 => 'TJ',
+        10 => 'UA',
+        11 => 'CN',
+        12 => 'DE',
+        13 => 'US',
+        14 => 'GB',
+        15 => 'AD',
+        16 => 'AE',
+        17 => 'AG',
+        18 => 'AL',
+        19 => 'AM',
+        20 => 'AO',
+        21 => 'AR',
+        22 => 'AT',
+        23 => 'AU',
+        24 => 'BA',
+        25 => 'BB',
+        26 => 'BD',
+        27 => 'BE',
+        28 => 'BF',
+        29 => 'BG',
+        30 => 'BH',
+        31 => 'BI',
+        32 => 'BJ',
+        33 => 'BN',
+        34 => 'BO',
+        35 => 'BR',
+        36 => 'BS',
+        37 => 'BT',
+        38 => 'BW',
+        39 => 'BY',
+        40 => 'BZ',
+        41 => 'CA',
+        42 => 'CD',
+        43 => 'CF',
+        44 => 'CG',
+        45 => 'CH',
+        46 => 'CI',
+        47 => 'CL',
+        48 => 'CM',
+        49 => 'CO',
+        50 => 'CR',
+        51 => 'CU',
+        52 => 'CV',
+        53 => 'CY',
+        54 => 'CZ',
+        55 => 'DJ',
+        56 => 'DK',
+        57 => 'DM',
+        58 => 'DO',
+        59 => 'DZ',
+        60 => 'EC',
+        61 => 'EE',
+        62 => 'EG',
+        63 => 'ER',
+        64 => 'ES',
+        65 => 'ET',
+        66 => 'FI',
+        67 => 'FJ',
+        68 => 'FM',
+        69 => 'FR',
+        70 => 'GA',
+        71 => 'GD',
+        72 => 'GE',
+        73 => 'GH',
+        74 => 'GM',
+        75 => 'GN',
+        76 => 'GQ',
+        77 => 'GR',
+        78 => 'GT',
+        79 => 'GW',
+        80 => 'GY',
+        81 => 'HN',
+        82 => 'HR',
+        83 => 'HT',
+        84 => 'HU',
+        85 => 'ID',
+        86 => 'IE',
+        87 => 'IL',
+        88 => 'IN',
+        89 => 'IQ',
+        90 => 'IS',
+        91 => 'IT',
+        92 => 'JM',
+        93 => 'JO',
+        94 => 'JP',
+        95 => 'KE',
+        96 => 'KH',
+        97 => 'KI',
+        98 => 'KM',
+        99 => 'KN',
+        100 => 'KP',
+        101 => 'KR',
+        102 => 'KW',
+        103 => 'LA',
+        104 => 'LB',
+        105 => 'LC',
+        106 => 'LI',
+        107 => 'LK',
+        108 => 'LR',
+        109 => 'LS',
+        110 => 'LT',
+        111 => 'LU',
+        112 => 'LV',
+        113 => 'LY',
+        114 => 'MA',
+        115 => 'MC',
+        116 => 'MD',
+        117 => 'ME',
+        118 => 'MG',
+        119 => 'MH',
+        120 => 'MK',
+        121 => 'ML',
+        122 => 'MM',
+        123 => 'MN',
+        124 => 'MR',
+        125 => 'MT',
+        126 => 'MU',
+        127 => 'MV',
+        128 => 'MW',
+        129 => 'MX',
+        130 => 'MY',
+        131 => 'MZ',
+        132 => 'NA',
+        133 => 'NE',
+        134 => 'NG',
+        135 => 'NI',
+        136 => 'NL',
+        137 => 'NO',
+        138 => 'NP',
+        139 => 'NR',
+        140 => 'NZ',
+        141 => 'OM',
+        142 => 'PA',
+        143 => 'PE',
+        144 => 'PG',
+        145 => 'PH',
+        146 => 'PK',
+        147 => 'PL',
+        148 => 'PS',
+        149 => 'PT',
+        150 => 'PW',
+        151 => 'PY',
+        152 => 'QA',
+        153 => 'RO',
+        154 => 'RS',
+        155 => 'RW',
+        156 => 'SA',
+        157 => 'SB',
+        158 => 'SC',
+        159 => 'SD',
+        160 => 'SE',
+        161 => 'SG',
+        162 => 'SI',
+        163 => 'SK',
+        164 => 'SL',
+        165 => 'SM',
+        166 => 'SN',
+        167 => 'SO',
+        168 => 'SR',
+        169 => 'SS',
+        170 => 'ST',
+        171 => 'SV',
+        172 => 'SY',
+        173 => 'SZ',
+        174 => 'TD',
+        175 => 'TG',
+        176 => 'TH',
+        177 => 'TL',
+        178 => 'TN',
+        179 => 'TO',
+        180 => 'TT',
+        181 => 'TV',
+        182 => 'TW',
+        183 => 'TZ',
+        184 => 'UG',
+        185 => 'UY',
+        186 => 'VA',
+        187 => 'VC',
+        188 => 'VE',
+        189 => 'VN',
+        190 => 'VU',
+        191 => 'WS',
+        192 => 'YE',
+        193 => 'ZA',
+        194 => 'ZM',
+        195 => 'ZW',
+    ],
+];
diff --git a/config/hr.php b/config/hr.php
index d7f92b4..bf38d6e 100644
--- a/config/hr.php
+++ b/config/hr.php
@@ -12,6 +12,11 @@ return [
 
     'default_phone' => '+993 61 92 92 48',
 
+    'employee_number' => [
+        'prefix' => 'EMP-',
+        'padding' => 5,
+    ],
+
     'file_uploads' => [
         'disk' => 'local',
         'directory' => 'hr',
diff --git a/database/factories/EmployeeFactory.php b/database/factories/EmployeeFactory.php
index 7d6457a..20849aa 100644
--- a/database/factories/EmployeeFactory.php
+++ b/database/factories/EmployeeFactory.php
@@ -10,6 +10,7 @@ use App\Models\Department;
 use App\Models\Employee;
 use App\Models\Position;
 use App\Models\Shift;
+use App\Support\Countries;
 use Illuminate\Database\Eloquent\Factories\Factory;
 
 /**
@@ -30,9 +31,9 @@ class EmployeeFactory extends Factory
         $gender = fake()->randomElement(Gender::cases());
 
         return [
-            'employee_number' => 'EMP-'.fake()->unique()->numerify('#####'),
+            'employee_number' => '',
             'full_name' => fake()->name($gender === Gender::Female ? 'female' : 'male'),
-            'national_id' => fake()->optional(0.8)->numerify('##########'),
+            'national_id' => fake()->optional(0.8)->randomElement(Countries::codes()),
             'gender' => $gender,
             'birth_date' => $birthDate,
             'phone' => '+993 61 92 92 48',
diff --git a/lang/en/countries.php b/lang/en/countries.php
new file mode 100644
index 0000000..15bccaf
--- /dev/null
+++ b/lang/en/countries.php
@@ -0,0 +1,202 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'AF' => 'Afghanistan',
+    'AL' => 'Albania',
+    'DZ' => 'Algeria',
+    'AD' => 'Andorra',
+    'AO' => 'Angola',
+    'AG' => 'Antigua and Barbuda',
+    'AR' => 'Argentina',
+    'AM' => 'Armenia',
+    'AU' => 'Australia',
+    'AT' => 'Austria',
+    'AZ' => 'Azerbaijan',
+    'BS' => 'Bahamas',
+    'BH' => 'Bahrain',
+    'BD' => 'Bangladesh',
+    'BB' => 'Barbados',
+    'BY' => 'Belarus',
+    'BE' => 'Belgium',
+    'BZ' => 'Belize',
+    'BJ' => 'Benin',
+    'BT' => 'Bhutan',
+    'BO' => 'Bolivia',
+    'BA' => 'Bosnia and Herzegovina',
+    'BW' => 'Botswana',
+    'BR' => 'Brazil',
+    'BN' => 'Brunei',
+    'BG' => 'Bulgaria',
+    'BF' => 'Burkina Faso',
+    'BI' => 'Burundi',
+    'CV' => 'Cabo Verde',
+    'KH' => 'Cambodia',
+    'CM' => 'Cameroon',
+    'CA' => 'Canada',
+    'CF' => 'Central African Republic',
+    'TD' => 'Chad',
+    'CL' => 'Chile',
+    'CN' => 'China',
+    'CO' => 'Colombia',
+    'KM' => 'Comoros',
+    'CG' => 'Congo',
+    'CD' => 'Congo (DRC)',
+    'CR' => 'Costa Rica',
+    'CI' => 'Côte d\'Ivoire',
+    'HR' => 'Croatia',
+    'CU' => 'Cuba',
+    'CY' => 'Cyprus',
+    'CZ' => 'Czechia',
+    'DK' => 'Denmark',
+    'DJ' => 'Djibouti',
+    'DM' => 'Dominica',
+    'DO' => 'Dominican Republic',
+    'EC' => 'Ecuador',
+    'EG' => 'Egypt',
+    'SV' => 'El Salvador',
+    'GQ' => 'Equatorial Guinea',
+    'ER' => 'Eritrea',
+    'EE' => 'Estonia',
+    'SZ' => 'Eswatini',
+    'ET' => 'Ethiopia',
+    'FJ' => 'Fiji',
+    'FI' => 'Finland',
+    'FR' => 'France',
+    'GA' => 'Gabon',
+    'GM' => 'Gambia',
+    'GE' => 'Georgia',
+    'DE' => 'Germany',
+    'GH' => 'Ghana',
+    'GR' => 'Greece',
+    'GD' => 'Grenada',
+    'GT' => 'Guatemala',
+    'GN' => 'Guinea',
+    'GW' => 'Guinea-Bissau',
+    'GY' => 'Guyana',
+    'HT' => 'Haiti',
+    'HN' => 'Honduras',
+    'HU' => 'Hungary',
+    'IS' => 'Iceland',
+    'IN' => 'India',
+    'ID' => 'Indonesia',
+    'IR' => 'Iran',
+    'IQ' => 'Iraq',
+    'IE' => 'Ireland',
+    'IL' => 'Israel',
+    'IT' => 'Italy',
+    'JM' => 'Jamaica',
+    'JP' => 'Japan',
+    'JO' => 'Jordan',
+    'KZ' => 'Kazakhstan',
+    'KE' => 'Kenya',
+    'KI' => 'Kiribati',
+    'KP' => 'North Korea',
+    'KR' => 'South Korea',
+    'KW' => 'Kuwait',
+    'KG' => 'Kyrgyzstan',
+    'LA' => 'Laos',
+    'LV' => 'Latvia',
+    'LB' => 'Lebanon',
+    'LS' => 'Lesotho',
+    'LR' => 'Liberia',
+    'LY' => 'Libya',
+    'LI' => 'Liechtenstein',
+    'LT' => 'Lithuania',
+    'LU' => 'Luxembourg',
+    'MG' => 'Madagascar',
+    'MW' => 'Malawi',
+    'MY' => 'Malaysia',
+    'MV' => 'Maldives',
+    'ML' => 'Mali',
+    'MT' => 'Malta',
+    'MH' => 'Marshall Islands',
+    'MR' => 'Mauritania',
+    'MU' => 'Mauritius',
+    'MX' => 'Mexico',
+    'FM' => 'Micronesia',
+    'MD' => 'Moldova',
+    'MC' => 'Monaco',
+    'MN' => 'Mongolia',
+    'ME' => 'Montenegro',
+    'MA' => 'Morocco',
+    'MZ' => 'Mozambique',
+    'MM' => 'Myanmar',
+    'NA' => 'Namibia',
+    'NR' => 'Nauru',
+    'NP' => 'Nepal',
+    'NL' => 'Netherlands',
+    'NZ' => 'New Zealand',
+    'NI' => 'Nicaragua',
+    'NE' => 'Niger',
+    'NG' => 'Nigeria',
+    'MK' => 'North Macedonia',
+    'NO' => 'Norway',
+    'OM' => 'Oman',
+    'PK' => 'Pakistan',
+    'PW' => 'Palau',
+    'PS' => 'Palestine',
+    'PA' => 'Panama',
+    'PG' => 'Papua New Guinea',
+    'PY' => 'Paraguay',
+    'PE' => 'Peru',
+    'PH' => 'Philippines',
+    'PL' => 'Poland',
+    'PT' => 'Portugal',
+    'QA' => 'Qatar',
+    'RO' => 'Romania',
+    'RU' => 'Russia',
+    'RW' => 'Rwanda',
+    'KN' => 'Saint Kitts and Nevis',
+    'LC' => 'Saint Lucia',
+    'VC' => 'Saint Vincent and the Grenadines',
+    'WS' => 'Samoa',
+    'SM' => 'San Marino',
+    'ST' => 'São Tomé and Príncipe',
+    'SA' => 'Saudi Arabia',
+    'SN' => 'Senegal',
+    'RS' => 'Serbia',
+    'SC' => 'Seychelles',
+    'SL' => 'Sierra Leone',
+    'SG' => 'Singapore',
+    'SK' => 'Slovakia',
+    'SI' => 'Slovenia',
+    'SB' => 'Solomon Islands',
+    'SO' => 'Somalia',
+    'ZA' => 'South Africa',
+    'SS' => 'South Sudan',
+    'ES' => 'Spain',
+    'LK' => 'Sri Lanka',
+    'SD' => 'Sudan',
+    'SR' => 'Suriname',
+    'SE' => 'Sweden',
+    'CH' => 'Switzerland',
+    'SY' => 'Syria',
+    'TW' => 'Taiwan',
+    'TJ' => 'Tajikistan',
+    'TZ' => 'Tanzania',
+    'TH' => 'Thailand',
+    'TL' => 'Timor-Leste',
+    'TG' => 'Togo',
+    'TO' => 'Tonga',
+    'TT' => 'Trinidad and Tobago',
+    'TN' => 'Tunisia',
+    'TR' => 'Turkey',
+    'TM' => 'Turkmenistan',
+    'TV' => 'Tuvalu',
+    'UG' => 'Uganda',
+    'UA' => 'Ukraine',
+    'AE' => 'United Arab Emirates',
+    'GB' => 'United Kingdom',
+    'US' => 'United States',
+    'UY' => 'Uruguay',
+    'UZ' => 'Uzbekistan',
+    'VU' => 'Vanuatu',
+    'VA' => 'Vatican City',
+    'VE' => 'Venezuela',
+    'VN' => 'Vietnam',
+    'YE' => 'Yemen',
+    'ZM' => 'Zambia',
+    'ZW' => 'Zimbabwe',
+];
diff --git a/lang/en/enums.php b/lang/en/enums.php
index 2f1f382..57e8c47 100644
--- a/lang/en/enums.php
+++ b/lang/en/enums.php
@@ -4,8 +4,8 @@ declare(strict_types=1);
 
 return [
     'gender' => [
-        'male' => 'Male',
-        'female' => 'Female',
+        'male' => 'Erkek',
+        'female' => 'Aýal',
         'other' => 'Other',
     ],
 
diff --git a/lang/en/hr.php b/lang/en/hr.php
index 4a3390c..96d4cc6 100644
--- a/lang/en/hr.php
+++ b/lang/en/hr.php
@@ -48,7 +48,7 @@ return [
         'photo' => 'Photo',
         'employee_number' => 'Employee Number',
         'full_name' => 'Full Name',
-        'national_id' => 'National ID',
+        'national_id' => 'Nationality',
         'gender' => 'Gender',
         'birth_date' => 'Birth Date',
         'phone' => 'Phone',
diff --git a/lang/ru/countries.php b/lang/ru/countries.php
new file mode 100644
index 0000000..bd08e62
--- /dev/null
+++ b/lang/ru/countries.php
@@ -0,0 +1,202 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'AF' => 'Афганистан',
+    'AL' => 'Албания',
+    'DZ' => 'Алжир',
+    'AD' => 'Андорра',
+    'AO' => 'Ангола',
+    'AG' => 'Антигуа и Барбуда',
+    'AR' => 'Аргентина',
+    'AM' => 'Армения',
+    'AU' => 'Австралия',
+    'AT' => 'Австрия',
+    'AZ' => 'Азербайджан',
+    'BS' => 'Багамы',
+    'BH' => 'Бахрейн',
+    'BD' => 'Бангладеш',
+    'BB' => 'Барбados',
+    'BY' => 'Беларусь',
+    'BE' => 'Бельгия',
+    'BZ' => 'Белиз',
+    'BJ' => 'Бенин',
+    'BT' => 'Бутан',
+    'BO' => 'Боливия',
+    'BA' => 'Босния и Герцеговина',
+    'BW' => 'Ботсвана',
+    'BR' => 'Бразилия',
+    'BN' => 'Бруней',
+    'BG' => 'Болгария',
+    'BF' => 'Буркина-Фaso',
+    'BI' => 'Бурунди',
+    'CV' => 'Кabo-Верде',
+    'KH' => 'Кambodja',
+    'CM' => 'Кamerun',
+    'CA' => 'Кanada',
+    'CF' => 'Центральноафриканская Республика',
+    'TD' => 'Чad',
+    'CL' => 'Чili',
+    'CN' => 'Китay',
+    'CO' => 'Кolumbiya',
+    'KM' => 'Коморские Острова',
+    'CG' => 'Республика Конgo',
+    'CD' => 'Демократическая Республика Конgo',
+    'CR' => 'Кosta-Rika',
+    'CI' => 'Кôte-d\'Ivoire',
+    'HR' => 'Хorvatiya',
+    'CU' => 'Кuba',
+    'CY' => 'Кipr',
+    'CZ' => 'Чехiya',
+    'DK' => 'Daniya',
+    'DJ' => 'Джibuti',
+    'DM' => 'Dominika',
+    'DO' => 'Dominikanskaya Respublika',
+    'EC' => 'Ekvador',
+    'EG' => 'Egipet',
+    'SV' => 'Sal\'vador',
+    'GQ' => 'Ekvatorial\'naya Gvineya',
+    'ER' => 'Eritreya',
+    'EE' => 'Estoniya',
+    'SZ' => 'Esvatini',
+    'ET' => 'Efiopiya',
+    'FJ' => 'Fidzhi',
+    'FI' => 'Finlyandiya',
+    'FR' => 'Frantsiya',
+    'GA' => 'Gabon',
+    'GM' => 'Gambiya',
+    'GE' => 'Gruziya',
+    'DE' => 'Germaniya',
+    'GH' => 'Gana',
+    'GR' => 'Gretsiya',
+    'GD' => 'Grenada',
+    'GT' => 'Gvatemala',
+    'GN' => 'Gvineya',
+    'GW' => 'Gvineya-Bisau',
+    'GY' => 'Gayana',
+    'HT' => 'Gaiti',
+    'HN' => 'Gonduras',
+    'HU' => 'Vengriya',
+    'IS' => 'Islandiya',
+    'IN' => 'Indiya',
+    'ID' => 'Indoneziya',
+    'IR' => 'Иран',
+    'IQ' => 'Irak',
+    'IE' => 'Irlandiya',
+    'IL' => 'Izra il',
+    'IT' => 'Italiya',
+    'JM' => 'Yamayka',
+    'JP' => 'Yaponiya',
+    'JO' => 'Iordaniya',
+    'KZ' => 'Казахстан',
+    'KE' => 'Keniya',
+    'KI' => 'Kiribati',
+    'KP' => 'KNDR',
+    'KR' => 'Respublika Koreya',
+    'KW' => 'Kuveyt',
+    'KG' => 'Kyrgyzstan',
+    'LA' => 'Laos',
+    'LV' => 'Latviya',
+    'LB' => 'Livan',
+    'LS' => 'Lesoto',
+    'LR' => 'Liberiya',
+    'LY' => 'Liviya',
+    'LI' => 'Likhhtenshteyn',
+    'LT' => 'Litva',
+    'LU' => 'Lyuksemburg',
+    'MG' => 'Madagaskar',
+    'MW' => 'Malavi',
+    'MY' => 'Malayziya',
+    'MV' => 'Mal\'divy',
+    'ML' => 'Mali',
+    'MT' => 'Mal\'ta',
+    'MH' => 'Marshallovy Ostrova',
+    'MR' => 'Mavritaniya',
+    'MU' => 'Mavrikiy',
+    'MX' => 'Meksika',
+    'FM' => 'Mikroneziya',
+    'MD' => 'Moldova',
+    'MC' => 'Monako',
+    'MN' => 'Mongoliya',
+    'ME' => 'Chernogoriya',
+    'MA' => 'Marokko',
+    'MZ' => 'Mozambik',
+    'MM' => 'Myanma',
+    'NA' => 'Namibiya',
+    'NR' => 'Nauru',
+    'NP' => 'Nepal',
+    'NL' => 'Niderlandy',
+    'NZ' => 'Novaya Zelandiya',
+    'NI' => 'Nikaragua',
+    'NE' => 'Niger',
+    'NG' => 'Nigeriya',
+    'MK' => 'Severnaya Makedoniya',
+    'NO' => 'Norvegiya',
+    'OM' => 'Oman',
+    'PK' => 'Pakistan',
+    'PW' => 'Palau',
+    'PS' => 'Palestina',
+    'PA' => 'Panama',
+    'PG' => 'Papua — Novaya Gvineya',
+    'PY' => 'Paragvay',
+    'PE' => 'Peru',
+    'PH' => 'Filippiny',
+    'PL' => 'Pol\'sha',
+    'PT' => 'Portugaliya',
+    'QA' => 'Katar',
+    'RO' => 'Rumyniya',
+    'RU' => 'Россия',
+    'RW' => 'Ruanda',
+    'KN' => 'Sent-Kits i Nevis',
+    'LC' => 'Sent-Lyusiya',
+    'VC' => 'Sent-Vinsent i Grenadiny',
+    'WS' => 'Samoa',
+    'SM' => 'San-Marino',
+    'ST' => 'San-Tome i Prinsipi',
+    'SA' => 'Saudovskaya Araviya',
+    'SN' => 'Senegal',
+    'RS' => 'Serbiya',
+    'SC' => 'Seyshely',
+    'SL' => 'Serra-Leone',
+    'SG' => 'Singapur',
+    'SK' => 'Slovakiya',
+    'SI' => 'Sloveniya',
+    'SB' => 'Solomonovy Ostrova',
+    'SO' => 'Somali',
+    'ZA' => 'Yuzhno-Afrikanskaya Respublika',
+    'SS' => 'Yuzhnyy Sudan',
+    'ES' => 'Ispaniya',
+    'LK' => 'Shri-Lanka',
+    'SD' => 'Sudan',
+    'SR' => 'Surinam',
+    'SE' => 'Shvetsiya',
+    'CH' => 'Shveytsariya',
+    'SY' => 'Siriya',
+    'TW' => 'Tayvan',
+    'TJ' => 'Tadzhikistan',
+    'TZ' => 'Tanzaniya',
+    'TH' => 'Tailand',
+    'TL' => 'Timor-Leste',
+    'TG' => 'Togo',
+    'TO' => 'Tonga',
+    'TT' => 'Trinidad i Tobago',
+    'TN' => 'Tunis',
+    'TR' => 'Турция',
+    'TM' => 'Туркmenistan',
+    'TV' => 'Tuvalu',
+    'UG' => 'Uganda',
+    'UA' => 'Ukraina',
+    'AE' => 'OAE',
+    'GB' => 'Velikobritaniya',
+    'US' => 'SShA',
+    'UY' => 'Urugvay',
+    'UZ' => 'Uzbekistan',
+    'VU' => 'Vanuatu',
+    'VA' => 'Vatikan',
+    'VE' => 'Venesuela',
+    'VN' => 'Vetnam',
+    'YE' => 'Yemen',
+    'ZM' => 'Zambiya',
+    'ZW' => 'Zimbabve',
+];
diff --git a/lang/ru/hr.php b/lang/ru/hr.php
index 85bb949..d5e642e 100644
--- a/lang/ru/hr.php
+++ b/lang/ru/hr.php
@@ -48,7 +48,7 @@ return [
         'photo' => 'Фото',
         'employee_number' => 'Табельный номер',
         'full_name' => 'ФИО',
-        'national_id' => 'Национальный ID',
+        'national_id' => 'Гражданство',
         'gender' => 'Пол',
         'birth_date' => 'Дата рождения',
         'phone' => 'Телефон',
diff --git a/lang/tk/countries.php b/lang/tk/countries.php
new file mode 100644
index 0000000..8ad0f39
--- /dev/null
+++ b/lang/tk/countries.php
@@ -0,0 +1,202 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'AF' => 'Owganystan',
+    'AL' => 'Albaniýa',
+    'DZ' => 'Aljir',
+    'AD' => 'Andorra',
+    'AO' => 'Angola',
+    'AG' => 'Antigua and Barbuda',
+    'AR' => 'Argentina',
+    'AM' => 'Ermenistan',
+    'AU' => 'Awstraliýa',
+    'AT' => 'Awstriýa',
+    'AZ' => 'Azerbaýjan',
+    'BS' => 'Bagama adalary',
+    'BH' => 'Bahreýn',
+    'BD' => 'Bangladesh',
+    'BB' => 'Barbados',
+    'BY' => 'Belarus',
+    'BE' => 'Belgiýa',
+    'BZ' => 'Belize',
+    'BJ' => 'Benin',
+    'BT' => 'Butan',
+    'BO' => 'Boliwiýa',
+    'BA' => 'Bosniýa we Gersegowina',
+    'BW' => 'Botswana',
+    'BR' => 'Braziliýa',
+    'BN' => 'Bruneý',
+    'BG' => 'Bolgariýa',
+    'BF' => 'Burkina Faso',
+    'BI' => 'Burundi',
+    'CV' => 'Cabo Verde',
+    'KH' => 'Kamboja',
+    'CM' => 'Cameroon',
+    'CA' => 'Kanada',
+    'CF' => 'Central African Republic',
+    'TD' => 'Chad',
+    'CL' => 'Çili',
+    'CN' => 'Hytaý',
+    'CO' => 'Kolumbiýa',
+    'KM' => 'Comoros',
+    'CG' => 'Congo',
+    'CD' => 'Congo (DRC)',
+    'CR' => 'Kosta-Rika',
+    'CI' => 'Côte d\'Ivoire',
+    'HR' => 'Horwatiýa',
+    'CU' => 'Kuba',
+    'CY' => 'Kipr',
+    'CZ' => 'Çeh Respublikasy',
+    'DK' => 'Daniýa',
+    'DJ' => 'Djibouti',
+    'DM' => 'Dominica',
+    'DO' => 'Dominikan Respublikasy',
+    'EC' => 'Ekwador',
+    'EG' => 'Müsür',
+    'SV' => 'Salwador',
+    'GQ' => 'Equatorial Guinea',
+    'ER' => 'Eritrea',
+    'EE' => 'Estoniýa',
+    'SZ' => 'Eswatini',
+    'ET' => 'Efiopiýa',
+    'FJ' => 'Fiji',
+    'FI' => 'Finlandiýa',
+    'FR' => 'Fransiýa',
+    'GA' => 'Gabon',
+    'GM' => 'Gambia',
+    'GE' => 'Gruziýa',
+    'DE' => 'Germaniýa',
+    'GH' => 'Ghana',
+    'GR' => 'Gresiýa',
+    'GD' => 'Grenada',
+    'GT' => 'Gwatemala',
+    'GN' => 'Guinea',
+    'GW' => 'Guinea-Bissau',
+    'GY' => 'Gaýana',
+    'HT' => 'Gaiti',
+    'HN' => 'Gonduras',
+    'HU' => 'Wengriýa',
+    'IS' => 'Islandiýa',
+    'IN' => 'Hindistan',
+    'ID' => 'Indoneziýa',
+    'IR' => 'Eýran',
+    'IQ' => 'Yrak',
+    'IE' => 'Irlandiýa',
+    'IL' => 'Ysrail',
+    'IT' => 'Italiýa',
+    'JM' => 'Ýamaýka',
+    'JP' => 'Ýaponiýa',
+    'JO' => 'Iordaniýa',
+    'KZ' => 'Gazagystan',
+    'KE' => 'Keniýa',
+    'KI' => 'Kiribati',
+    'KP' => 'Demokratik Halk Respublikasy',
+    'KR' => 'Günorta Koreýa',
+    'KW' => 'Kuweýt',
+    'KG' => 'Gyrgyzystan',
+    'LA' => 'Laos',
+    'LV' => 'Latwiýa',
+    'LB' => 'Liwan',
+    'LS' => 'Lesotho',
+    'LR' => 'Liberia',
+    'LY' => 'Liwiýa',
+    'LI' => 'Lihtenshteýn',
+    'LT' => 'Litwa',
+    'LU' => 'Lýuksemburg',
+    'MG' => 'Madagascar',
+    'MW' => 'Malawi',
+    'MY' => 'Malaýziýa',
+    'MV' => 'Maldiwler',
+    'ML' => 'Mali',
+    'MT' => 'Malta',
+    'MH' => 'Marşall adalary',
+    'MR' => 'Mauritania',
+    'MU' => 'Mauritius',
+    'MX' => 'Meksika',
+    'FM' => 'Mikroneziýa',
+    'MD' => 'Moldowa',
+    'MC' => 'Monako',
+    'MN' => 'Mongoliýa',
+    'ME' => 'Chernogoriýa',
+    'MA' => 'Marokko',
+    'MZ' => 'Mozambique',
+    'MM' => 'Mýanma',
+    'NA' => 'Namibia',
+    'NR' => 'Nauru',
+    'NP' => 'Nepal',
+    'NL' => 'Gollandiýa',
+    'NZ' => 'Täze Zelandiýa',
+    'NI' => 'Nikaragua',
+    'NE' => 'Niger',
+    'NG' => 'Nigeriýa',
+    'MK' => 'Demirgazyk Makedoniýa',
+    'NO' => 'Norwegiýa',
+    'OM' => 'Oman',
+    'PK' => 'Pakistan',
+    'PW' => 'Palau',
+    'PS' => 'Palestina',
+    'PA' => 'Panama',
+    'PG' => 'Papua — Täze Gwineýa',
+    'PY' => 'Paragwaý',
+    'PE' => 'Peru',
+    'PH' => 'Filippinler',
+    'PL' => 'Polşa',
+    'PT' => 'Portugaliýa',
+    'QA' => 'Katar',
+    'RO' => 'Rumyniýa',
+    'RU' => 'Rusiya',
+    'RW' => 'Rwanda',
+    'KN' => 'Saint Kitts and Nevis',
+    'LC' => 'Saint Lucia',
+    'VC' => 'Saint Vincent and the Grenadines',
+    'WS' => 'Samoa',
+    'SM' => 'San-Marino',
+    'ST' => 'São Tomé and Príncipe',
+    'SA' => 'Saud Arabystany',
+    'SN' => 'Senegal',
+    'RS' => 'Serbiýa',
+    'SC' => 'Seychelles',
+    'SL' => 'Sierra Leone',
+    'SG' => 'Singapur',
+    'SK' => 'Slowakiýa',
+    'SI' => 'Slovenia',
+    'SB' => 'Solomon adalary',
+    'SO' => 'Somalia',
+    'ZA' => 'Günorta Afrika',
+    'SS' => 'South Sudan',
+    'ES' => 'Ispaniýa',
+    'LK' => 'Shri-Lanka',
+    'SD' => 'Sudan',
+    'SR' => 'Surinam',
+    'SE' => 'Shwesiýa',
+    'CH' => 'Shweýsariýa',
+    'SY' => 'Siriýa',
+    'TW' => 'Taýwan',
+    'TJ' => 'Täjikistan',
+    'TZ' => 'Tanzania',
+    'TH' => 'Taýland',
+    'TL' => 'Timor-Leste',
+    'TG' => 'Togo',
+    'TO' => 'Tonga',
+    'TT' => 'Trinidad we Tobago',
+    'TN' => 'Tunis',
+    'TR' => 'Türkiýe',
+    'TM' => 'Türkmenistan',
+    'TV' => 'Tuwalu',
+    'UG' => 'Uganda',
+    'UA' => 'Ukraina',
+    'AE' => 'Birleşik Arap Emirlikleri',
+    'GB' => 'Beýik Britaniýa',
+    'US' => 'Amerika Birleşik Ştatlary',
+    'UY' => 'Urugwaý',
+    'UZ' => 'Ozbekistan',
+    'VU' => 'Wanuatu',
+    'VA' => 'Watikan',
+    'VE' => 'Wenesuela',
+    'VN' => 'Wýetnam',
+    'YE' => 'Ýemen',
+    'ZM' => 'Zambia',
+    'ZW' => 'Zimbabwe',
+];
diff --git a/lang/tk/hr.php b/lang/tk/hr.php
index af1e352..f2d6030 100644
--- a/lang/tk/hr.php
+++ b/lang/tk/hr.php
@@ -48,7 +48,7 @@ return [
         'photo' => 'Surat',
         'employee_number' => 'Işgär belgisi',
         'full_name' => 'Doly ady',
-        'national_id' => 'Milli ID',
+        'national_id' => 'Raýatlyk',
         'gender' => 'Jyns',
         'birth_date' => 'Doglan senesi',
         'phone' => 'Telefon',
diff --git a/tests/Feature/Import/EmployeeImportTest.php b/tests/Feature/Import/EmployeeImportTest.php
index 5dafd4f..f9ad94e 100644
--- a/tests/Feature/Import/EmployeeImportTest.php
+++ b/tests/Feature/Import/EmployeeImportTest.php
@@ -22,13 +22,13 @@ beforeEach(function (): void {
 it('skips duplicate employees during import', function (): void {
     Employee::factory()->create([
         'employee_number' => 'EMP-90001',
-        'national_id' => '1234567890',
+        'national_id' => 'TM',
     ]);
 
     $rows = [[
         'employee_number' => 'EMP-90001',
         'full_name' => 'Duplicate Employee',
-        'national_id' => '1234567890',
+        'national_id' => 'TM',
         'department' => 'Engineering',
         'position' => 'Developer',
         'shift' => 'Day Shift',
@@ -68,6 +68,29 @@ it('imports valid employee rows', function (): void {
     ]);
 });
 
+it('imports valid employee rows without an employee number', function (): void {
+    $rows = [[
+        'full_name' => 'Auto Number Employee',
+        'gender' => 'male',
+        'birth_date' => '1992-02-20',
+        'department' => 'Engineering',
+        'position' => 'Developer',
+        'shift' => 'Day Shift',
+        'hire_date' => '2024-04-01',
+    ]];
+
+    $result = $this->importService->import(ImportType::Employees, $rows);
+
+    expect($result->imported)->toBe(1)
+        ->and($result->skipped)->toBe(0)
+        ->and($result->failed)->toBe(0);
+
+    $employee = Employee::query()->where('full_name', 'Auto Number Employee')->first();
+
+    expect($employee)->not->toBeNull()
+        ->and($employee->employee_number)->toBe('EMP-00001');
+});
+
 it('reports validation errors for invalid employee rows', function (): void {
     $rows = [[
         'employee_number' => '',
@@ -93,8 +116,7 @@ it('validates required fields and unknown references', function (): void {
 
     $errors = $this->transformer->validate($dto);
 
-    expect($errors)->toContain('Employee number is required.')
-        ->and($errors)->toContain('Full name is required.')
+    expect($errors)->toContain('Full name is required.')
         ->and($errors)->toContain('Department "Missing Department" was not found.')
         ->and($errors)->toContain('Position "Missing Position" was not found.')
         ->and($errors)->toContain('Shift "Missing Shift" was not found.');
@@ -103,7 +125,7 @@ it('validates required fields and unknown references', function (): void {
 it('detects duplicates by employee number or national id', function (): void {
     Employee::factory()->create([
         'employee_number' => 'EMP-80001',
-        'national_id' => '9988776655',
+        'national_id' => 'TM',
     ]);
 
     $duplicateByNumber = EmployeeRowDto::fromMappedRow([
@@ -114,7 +136,7 @@ it('detects duplicates by employee number or national id', function (): void {
     $duplicateByNationalId = EmployeeRowDto::fromMappedRow([
         'employee_number' => 'EMP-80002',
         'full_name' => 'Another Person',
-        'national_id' => '9988776655',
+        'national_id' => 'TM',
     ]);
 
     expect($this->transformer->isDuplicate($duplicateByNumber))->toBeTrue()
diff --git a/tests/Feature/LocalizationTest.php b/tests/Feature/LocalizationTest.php
index 78b3ff3..dcf27ce 100644
--- a/tests/Feature/LocalizationTest.php
+++ b/tests/Feature/LocalizationTest.php
@@ -35,6 +35,19 @@ it('returns translated navigation group labels', function (): void {
     expect(NavigationGroup::LeaveManagement->getLabel())->toBe('Dynç alyş dolandyryşy');
 });
 
+it('returns translated filament navigation group labels at request time', function (): void {
+    $admin = createAdminUser(['locale' => 'tk']);
+
+    $this->actingAs($admin);
+
+    App::setLocale('tk');
+
+    $groups = filament()->getNavigation();
+    $labels = collect($groups)->map->getLabel()->filter()->values()->all();
+
+    expect($labels)->toContain('Gurama', 'Işgärler', 'Dynç alyş dolandyryşy', 'Ýazgylar');
+});
+
 it('returns translated filament resource navigation labels', function (): void {
     App::setLocale('tk');
 
diff --git a/tests/Feature/Models/EmployeeTest.php b/tests/Feature/Models/EmployeeTest.php
index ecf97ff..c402398 100644
--- a/tests/Feature/Models/EmployeeTest.php
+++ b/tests/Feature/Models/EmployeeTest.php
@@ -84,6 +84,32 @@ it('defines expected employee relationships', function (): void {
         ->and($employee->documents)->toHaveCount(1);
 });
 
+it('generates an employee number on save when number is blank', function (): void {
+    $employee = Employee::factory()->create([
+        'employee_number' => '',
+    ]);
+
+    expect($employee->employee_number)->toBe('EMP-00001');
+});
+
+it('does not overwrite an existing employee number on update', function (): void {
+    $employee = Employee::factory()->create([
+        'employee_number' => 'EMP-CUSTOM',
+    ]);
+
+    $employee->update(['full_name' => 'Updated Name']);
+
+    expect($employee->fresh()->employee_number)->toBe('EMP-CUSTOM');
+});
+
+it('increments employee numbers sequentially', function (): void {
+    $first = Employee::factory()->create(['employee_number' => '']);
+    $second = Employee::factory()->create(['employee_number' => '']);
+
+    expect($first->employee_number)->toBe('EMP-00001')
+        ->and($second->employee_number)->toBe('EMP-00002');
+});
+
 it('enforces a unique employee number', function (): void {
     Employee::factory()->create(['employee_number' => 'EMP-UNIQUE']);
 
diff --git a/tests/Feature/Services/EmployeeServiceTest.php b/tests/Feature/Services/EmployeeServiceTest.php
index 542d20e..33e82e4 100644
--- a/tests/Feature/Services/EmployeeServiceTest.php
+++ b/tests/Feature/Services/EmployeeServiceTest.php
@@ -26,7 +26,6 @@ it('creates an employee with the provided data', function (): void {
     $shift = Shift::factory()->create();
 
     $employee = $this->service->create([
-        'employee_number' => 'EMP-10001',
         'full_name' => 'John Doe',
         'gender' => 'male',
         'birth_date' => '1990-05-15',
@@ -39,16 +38,37 @@ it('creates an employee with the provided data', function (): void {
     ]);
 
     expect($employee)->toBeInstanceOf(Employee::class)
-        ->and($employee->employee_number)->toBe('EMP-10001')
+        ->and($employee->employee_number)->toBe('EMP-00001')
         ->and($employee->full_name)->toBe('John Doe')
         ->and($employee->employment_status)->toBe(EmploymentStatus::Active);
 
     $this->assertDatabaseHas('employees', [
-        'employee_number' => 'EMP-10001',
+        'employee_number' => 'EMP-00001',
         'full_name' => 'John Doe',
     ]);
 });
 
+it('creates an employee with an explicit employee number', function (): void {
+    $department = Department::factory()->create();
+    $position = Position::factory()->create();
+    $shift = Shift::factory()->create();
+
+    $employee = $this->service->create([
+        'employee_number' => 'EMP-10001',
+        'full_name' => 'Jane Doe',
+        'gender' => 'female',
+        'birth_date' => '1991-06-20',
+        'phone' => '+993 61 92 92 48',
+        'department_id' => $department->id,
+        'position_id' => $position->id,
+        'shift_id' => $shift->id,
+        'employment_status' => EmploymentStatus::Active,
+        'hire_date' => '2024-02-01',
+    ]);
+
+    expect($employee->employee_number)->toBe('EMP-10001');
+});
+
 it('terminates an employee and notifies hr managers', function (): void {
     $employee = Employee::factory()->active()->create();
     $terminationDate = Carbon::parse('2025-06-30');