In a bid to curb rising domestic labor costs, Hyundai Motor Co is seeking to base wages on merit not seniority in an overhaul of a decades-old salary system that puts the South Korean firm on a collision course with its activist union. Cars made by South Korea's automakers Hyundai Motor and affiliate Kia Motors are parked at the companies' shipping yard at a port in Pyeongtaek, south of Seoul in this January 20, 2014 file photo.