I object, turn to the employer and stamp! (6)
I believe the answer is:
emboss
'stamp' is the definition.
(I know that stamp can be written as emboss)
'i object turn to the employer' is the wordplay.
'i object' becomes 'me'.
'turn' says the letters should be written in reverse.
'to the employer' becomes 'boss' (boss is a kind of employer).
'me' reversed gives 'em'.
'em'+'boss'='EMBOSS'
'and' is the link.
(Other definitions for emboss that I've seen before include "Ornament with slightly raised pattern" , "Raise (a design) in relief" , "Make a raised carving" , "Carve or mould a design to stand out in relief" , "Ornament in relief" .)