By Branwen Jeffreys
BBC News
A question of 18 caller onslaught days are planned crossed 150 UK universities successful February and March, the University and College Union has announced.
It said a wage connection worthy betwixt 4-5% made during talks with employers this week was not enough.
UCU wide caput Dr Jo Grady said the "clock is present ticking" for a woody to beryllium reached.
It comes aft the authorities announced tuition fees successful England volition beryllium frozen for different 2 years.
"Today our national came unneurotic to backmost an unprecedented programme of escalating onslaught action. The timepiece is present ticking for the assemblage to nutrient a woody oregon beryllium deed with wide disruption passim spring," said Dr Grady.
University unit antecedently held 3 days of strikes successful November successful a quality implicit pay, moving conditions and pension cuts.
The national has demanded a wage emergence worthy either the RPI measurement of ostentation +2% oregon 12%, whichever is higher, arsenic good arsenic enactment to extremity the usage of zero hours and impermanent contracts.
It has besides called for enactment to tackle "excessive workloads" resulting successful hours of "unpaid work".
Academic unit and those successful different nonrecreational roles including administrators, librarians and technicians person taken portion successful the strikes.