야근

Working late into the night — staying past regular hours to finish work. From 야 (night) + 근 (work). In Korean work culture, 야근 is practically a rite of passage. Not just overtime — often an unspoken expectation.

야 = night (shortened from '야'간)

근 = work (shortened from '근'무)

See also: 야근, 야근각, 칼퇴, 칼퇴각