Concession workers at the home of the Celtics and Bruins are slated to meet Sunday to vote for a strike authorization.

Around 600 workers, from the suites to the merchandise stands, are taking a strike vote Sunday after three months of stalled contract negotiations.

After months of contract negotiations, the union representing over 600 concessions workers at TD Garden says it may go on strike, in part because of the venue’s move toward more self-checkout kiosks.