Reward any temp might work for? (7)

I believe the answer is:

payment

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

'any temp might work for?' is the wordplay.
'any temp' anagrams to 'PAYMENT'.
Though, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for payment that I've seen before include "Purchase price" , "Sum of money handed over" , "Punishment" , "Discharge of an obligation with money" , "Sum given for something" .)

I've seen this clue in The Times.

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