The UCU union members met on Wednesday of last week. They are fighting new contracts imposed by college principal Mark Silverman.
The contracts slash sick pay and holidays, and impose longer working hours. UCU members struck for over five weeks against the contracts last term.
Bosses have failed to meet with the union for talks, despite repeated requests.
Workers have faced new threats since returning to work after the summer break. They include imposing a harsher lesson observation policy and removing union rights.
Silverman even threatened to withdraw entire courses if workers took further significant action.
The UCU members voted to ballot for industrial action if the changes to the lesson observation process are not withdrawn.