// выбираем переработки сотрудников из таблицы OverhoursManagement
public List<OverhoursManagement> getEmployeesOverhoursManagement(string employee_id, string start_period, string begda, string endda, bool downloaded)
{
SQLDB sql = new SQLDB();
List<OverhoursManagement> current = sql.getOverhoursManagement(employee_id, start_period, begda, endda, downloaded);
return current;
}