Has second thoughts about a hundred workers (7)

I believe the answer is:

recants

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'has second thoughts' is the definition.
I can't judge whether this defines the answer.

'about a hundred workers' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'a hundred' becomes 'C' (Roman numeral).
'workers' becomes 'ants' (worker ants).
're'+'c'+'ants'='RECANTS'

Can you help me to learn more?

(Other definitions for recants that I've seen before include "Withdraws declaration" , "Disclaims, takes back" , "Retracts" , "takes back what was said" .)

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

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