// выбираем переработки сотрудников из таблицы OverhoursDiversity
    public List<OverhoursDiversity> getEmployeesOverhoursDiversity(string employee_id, string start_period, string begda, string endda, bool downloaded)
    {
        SQLDB sql = new SQLDB();

        List<OverhoursDiversity> current = sql.getOverhoursDiversity(employee_id, start_period, begda, endda, downloaded);

        return current;
    }