Conspicuous — not at work (8)
I believe the answer is:
striking
I believe this clue is a double definition.
'conspicuous' is the first definition.
(similar in meaning)
'not at work' is the second definition.
(Other definitions for striking that I've seen before include "Impressive; refusing to work" , "Remarkable; hitting" , "Prominent" , "Conspicuously impressive" , "Attracting attention by reason of being unusual" .)