Company provided cap (4)
I believe the answer is:
coif
'cap' is the definition.
(coif is a kind of cap)
'company provided' is the wordplay.
'company' becomes 'co' (abbreviation).
'provided' becomes 'if'.
'co'+'if'='COIF'
(Other definitions for coif that I've seen before include "Dress the hair" , "Cap worn by fundamentalist Mormon women: hairstyle" , "what can be made of lawn?" , "Headgear" , "Nun's cap" .)