Crossword Genius

Work hard for Starmer's team (6)

Ross

I believe the answer is:

labour

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

I cannot understand how the remainder of the clue works.

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(Other definitions for labour that I've seen before include "hands?" , "Workers" , "Donkey-work" , "opposition" , "Hard work, party" .)

I've seen this clue in The Sun.
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