Stands up for better pay (5)

I believe the answer is:

rises

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'stands up' is the definition.
('rise' can be a synonym of 'stand up')

I don't understand the rest of the clue.

(Other definitions for rises that I've seen before include "Gets up" , "Ascends" , "Moves upward" , "Moves upwards" , "Comes or goes upward" .)

I've seen this clue in the Evening Standard.

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