Teaching and research staff at Lancaster University begun a period of industrial action amid the threat of job losses.
Members of the University and College Union (UCU) are unhappy about the threat of compulsory redundancies, as the university seeks to cut 400 full-time posts as part of efforts to save £30m, amid rising costs and a fall in international student numbers.
Staff will be working to rule, refusing to cover absent colleagues and refusing to undertake any work outside their job description.
The university said while compulsory redundancies have not been ruled out, every effort was being made to try to find savings "through voluntary means".
