Lecturers at four universities in Wales are beginning the biggest university strike ever over a new pension scheme.
Lecturers from Aberystwyth University, Bangor University, Cardiff University and the University of Wales are among 61 institutions across the UK on the 14 day strike.
The dispute centres around proposals by Universities UK (UUK) to change the pension scheme which could see lecturers being nearly £10,000 a year worse off in retirement.
88% of members of the UCU union backed the action. UCU general secretary Sally Hunt say staff feel, 'let down by leaders who seem to care more about defending their own perks than the rights of their staff'
Meanwhile, some students are demanding £850 in compensation for lost lecture time. More than 2,000 Bangor University and more than 80 Aberystwyth University students have signed separate petitions calling for the money.
At Cardiff University 3,900 students have signed a petition. The university say they're committed to student learning.