A representative of the Unite union is asking for clarification over the savings the Department of Community, Culture and Leisure says it needs to make on the buses.
Officials from the department have said they need to save £300,000.
They've tried to do that in part by taking away bus drivers' entitlement to a paid lunch break, which has led to a stand-off with the unions.
Unite's Eric Holmes says so far his requests to have some figures clarified have not been met:
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