private void AddWorkTypeCmd(object model)
        {
            var worktype = model as WorkType;

            if (string.IsNullOrWhiteSpace(worktype.WorkTypeName))
            {
                return;
            }

            _repositoryManager.AddWorkType(worktype);
            WorkTypeToAdd = new WorkType();
            var works = _repositoryManager.GetWorkTypes();

            WorkTypes            = ProcessWorkTypeKeyValue(works);
            LabourToAdd.WorkType = WorkTypes.First();
            OnPropertyChanged(nameof(LabourToAdd));
        }