SEOUL: South Koreans working in an industrial enclave in the North will pay the communist country income tax for the first time since the South opened the zone near the border in 2004. The Kaesong industrial complex, a few km from the tense inter-Korean border, is one of the showcase joint projects launched after the landmark 2000 summit between leaders of the divided peninsula. The zone lets South Korean countries benefit from skilled but cheap Northern labor. The North charges $57.50 a month for each worker it provides — roughly five per cent of wages in the South.