Dismiss bank worker (7)
I believe the answer is:
cashier
I believe this clue is a double definition.
'dismiss' is the first definition.
(I've seen this before)
'bank worker' is the second definition.
(I've seen this before)
(Other definitions for cashier that I've seen before include "Bank teller" , "Employee who takes in or gives out money" , "Fire" , "money dispenser" , "Bank clerk" .)