Auditor's restraint irritated American manual worker (6)
I believe the answer is:
typist
'manual worker' is the definition.
(a typist works with their hands)
I can't explain the rest of the clue.
(Other definitions for typist that I've seen before include "Keyboard operator" , "Pre-computer office worker" , "Operator of a machine that prints one character at a time" , "One using keyboard" , "Skilled keyboarder" .)