The Turkish arm of French carmaker Renault (RENA.PA) on Saturday offered concessions including a cash lump sum to striking workers if they return to work. Production at the company’s joint venture Oyak Renault has been halted for a week in a dispute with workers over pay and working conditions, which has also affected other producers in the northwest city of Bursa, including Tofas (TOASO.IS) and Ford (F.N) unit Ford Otosan (FROTO.IS).