Workers making clothes for the European Ryder Cup golf team, will begin a work-to-rule and overtime ban on Friday.
The action at Mackinnon of Scotland, a subsidiary of Edinburgh Wool Mill, will begin on the same day as the tournament begins, with a series of strikes to follow if the dispute is not resolved.
Workers voted 85% in favour of the action, after Edinburgh Wool Mill refused to make a pay offer, according to the Community trade union.
