Poll: Do you support Queen's and Ulster University staff industrial strike?
Lecturers at Ulster University and Queen's will begin strike action today.
Sixty-one UK universities are taking industrial action.
An escalating wave of stoppages over a four-week period begins with a two-day walkout by members of the University and College Union (UCU). The protest surrounds changes to pensions.
UCU Northern Ireland official Katharine Clarke said: "Clearly the managements of our universities are unconcerned about their staff facing poverty in retirement after a lifetime of dedicated service.
"This is totally unacceptable and has left our members with no alternative but to strike to defend the pensions they have paid into over the course of their employment."
Olivia Potter-Hughes from the National Union of Students Northern Ireland said: "It is important that a strong message is sent out against any employers who might consider reducing the terms or conditions of staff."