Clothes department blind opened by some workers? (8)
I believe the answer is:
menswear
'clothes department' is the definition.
'blind opened by some workers?' is the wordplay.
'blind' becomes 'swear' ('blind' means 'swear' as in 'effing and blinding').
'opened by' says to put letters next to each other.
'some workers?' becomes 'men' (man is a kind of worker).
'swear' put after 'men' is 'MENSWEAR'.
(Other definitions for menswear that I've seen before include "Y-fronts, among other things" , "Clothing for males" , "Male clothes" , "Suits, shirts, ties etc" , "For example, ties" .)