Leave out workers' garments (3,5)
I believe the answer is:
ski pants
'garments' is the definition.
(I've seen this before)
'leave out workers'' is the wordplay.
'leave out' becomes 'skip' (skipping is a kind of leaving out).
'workers'' becomes 'ants' (worker ants).
'skip'+'ants'='SKI PANTS'
(Other definitions for ski pants that I've seen before include "Winter sports wear" , "Gear employed descending mountain" , "Trousers" , "Garments" .)