Crossword Genius

Open on one? I object to working more (8)

Ross

I believe the answer is:

overtime

I'm a little stuck... Click here to teach me more about this clue!

'working more' is the definition.
Both the definition and answer are adverbs. Maybe you can see an association between them that I can't see?

'open on one? i object' is the wordplay.
'open' becomes 'overt' (associated in meaning).
'on' is a charade indicator (letters next to each other).
'one?' becomes 'I' (Roman numeral).
'i object' becomes 'me'.
'overt'+'i'+'me'='OVERTIME'

'to' is the link.

Can you help me to learn more?

(Other definitions for overtime that I've seen before include "Hours worked and paid for beyond the usual amount" , "Work beyond normal hours? Remove it" , "Hours worked in excess of usual" , "Extra hours worked" , "Work in excess of fixed period" .)

I've seen this clue in the Sydney Morning Herald.
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