고 쉬다

do that and then rest

Pairs an action with resting: 약 먹고 쉬는 게 좋겠어 "you should take some medicine and rest", which is the standard thing to say to someone unwell. 미리 연락하고 쉴게요 is "I'll let you know in advance and then take the time off" — 쉬다 covers time off work as much as physical rest. 마음 놓고 쉬다 is resting with your mind properly at ease, and 꼼짝도 안 하고 쉬다 is not budging at all.