Staff at Darlington College will strike for two consecutive days on Tuesday 9 and Wednesday 10 May after rejecting a lowball 3% pay offer.
The union said there is still time for the strike to be halted, but that the college must make staff a realistic offer that helps them meet the cost-of-living crisis.
Staff have already been on strike for three days so far this academic year after the college imposed a pay award of just 1% for 21/22 and UCU is reballoting its members so it can call further action.
The latest college accounts show the college is holding £3m in cash and that its income has increased but it is spending less on staff "due to the difficulty in recruiting".
