I rub along somehow, working hard (9)

I believe the answer is:

labouring

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'working hard' is the definition.
'labouring' can be an answer for 'working' (labouring is a kind of working). I am unsure of the 'hard' bit.

'i rub along somehow' is the wordplay.
'somehow' indicates anagramming the letters.
'i'+'rub'+'along'='irubalong'
'irubalong' anagrammed gives 'LABOURING'.

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

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