Uni noise disrupted when workers get-together (8)

I believe the answer is:

unionise

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'workers get-together' is the definition.
The definition suggests a verb in its base form which matches the answer.

'uni noise disrupted' is the wordplay.
'disrupted' indicates anagramming the letters.
'noise' with letters rearranged gives 'onise'.
'uni'+'onise'='UNIONISE'

'when' acts as a link.

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(Another definition for unionise that I've seen is " Recruit workers into a representative body".)

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

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