To be out of work upsets some actresses (4)

I believe the answer is:

rest

I'm a little stuck... Click here to teach me more about this clue!

'to be' is the definition.
(resting is a kind of being)

I can't explain the remainder of the clue.

(Other definitions for rest that I've seen before include "Repose - remainder" , "Others; cease work" , "Take a breather - (the) others" , "'Relax, pause from work (4)'" , "Remainder; be inactive" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app