Casual worker on leave? (7)
I believe the answer is:
offhand
'casual' is the definition.
(synonyms)
'worker on leave?' is the wordplay.
I cannot quite understand how this works, but
'worker' could be 'hand' (hand is a kind of worker) and 'hand' is present in the answer.
'on leave?' could be 'off' (off work) and 'off' is present in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for offhand that I've seen before include "Of speech, casual or curt" , "Without thought" , "Casually thoughtless or inconsiderate" , "Nonchalant" , "Casual or curt, like discarded glove?" .)