People working with duds? (3,5)
I believe the answer is:
rag trade
'people working with duds?' is the definition.
(duds can refer to items of clothing)
This is all the clue.
(Other definitions for rag trade that I've seen before include "Informally, the clothing business" , "Informal description of clothing industry" , "The fashion business" , "Clothing business (informal)" , "Commonly, the clothing business" .)