public EmployeeRecordingWorkingModelHelper(IEmployeeRecordingWorkingModelService service)
        {
            if (service == null)
                throw new ArgumentNullException();

            _service = (service as EmployeeRecordingWorkingModelService);

            if (_service == null)
                throw new ArgumentNullException();
        }
        public EmployeeRecordingWorkingModelHelper(IEmployeeRecordingWorkingModelService service)
        {
            if (service == null)
                throw new ArgumentNullException();

            _service = (service as EmployeeRecordingWorkingModelService);

            if (_service == null)
                throw new ArgumentNullException();
        }