Engineers flag and cease work (6)
I believe the answer is:
retire
'cease work' is the definition.
'retire' can be an answer for 'cease' (retiring is a kind of ceasing). I'm not sure about the 'work' bit.
'engineers flag' is the wordplay.
'engineers' becomes 're' (Royal Engineers).
'flag' becomes 'tire' (I've seen this in other clues).
're'+'tire'='RETIRE'
'and' is the link.
Can you help me to learn more?
(Other definitions for retire that I've seen before include "Get your head down" , "Finish employment" , "Leave work; go back" , "Give up the job and go to bed" , "Finish following one's career" .)