Labour charge for making a big well (4,4)

I believe the answer is:

wage bill

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'labour charge' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'making a big well' is the wordplay.
'making' indicates an anagram.
'a'+'big'+'well'='abigwell'
'abigwell' with letters rearranged gives 'WAGE BILL'.

'for' is the link.

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I've seen this clue in The Globe and Mail.

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