Strict control for company worker? (4,4)

I believe the answer is:

firm hand

'strict control' is the definition.
(I've seen this before)

'company worker?' is the wordplay.
'company' becomes 'firm' (firm can mean a company or business).
'worker?' becomes 'hand' (hand is a kind of worker).
'firm'+'hand'='FIRM HAND'

'for' acts as a link.

(Another definition for firm hand that I've seen is " Strict control".)

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