Workers at the Kilwinning campus of Ayrshire College were set to strike on Wednesday and Thursday of this week.
The EIS-Fela union members are in dispute with bosses over enforced changes to working patterns.
Students have protested to support of them.
The workers’ action has escalated from striking one day a week to two days this week and next and three days a week after the holiday break.
Bosses have suspended the union rep at the college. The union is balloting all campuses to strike in response. The ballot ends on Tuesday of next week.