world day for safety and health at work background with a worker and safety helmet

world day safety health work international helmet banner worker industrial vector care poster global safe symbol labor design prevention background construction industry awareness danger labour worldwide national campaign protection caution security holiday equipment april happy protective accident 28 graphic environment human globe business hari sedunia untuk keselamatan dan kesehatan di tempat kerja ngay gioi toan va suc khoe tai noi lam viec