//...
use App\Models\Employee;
//...

    public function store() {
        
        $employee = new Employee;
        $employee->name = request()->get('name');
        $employee->city = request()->get('city');
        $employee->salary = request()->get('salary');
        $res = $employee->save();

        response()->json([
            'success' => $res
        ]);
    }