 Aslef members want negotiation rights |
Tram services have returned to normal after a 24-hour New Year's Day strike by drivers who belong to the Alsef union. Trams were operating on a reduced service on New Year's Day after the drivers went on strike at midnight in a row over union recognition.
They are unhappy that only the Transport and General Workers Union (TGWU) has negotiation rights for pay and conditions.
Aslef represents about a quarter of Metrolink's 340 staff.
The union's representative Colin Smith said: "We've got nothing against the TGWU, they're a fantastic trade union along with all of the trade unions, but we'd like recognition along with them."
But Metrolink has said if it begins talking to Aslef it could cause a strike by TGWU members.
The firm says the original agreement has the blessing of the TUC.
More Aslef strike action is currently planned over the next eight weeks.