Universities in Nigeria have been thrown into chaos after workers voted to walk out over unpaid allowances and job security.
The Academic Staff Union of Universities (ASUU) went on strike after pay talks over pay broke down.
According to ASUU national president, Isa Fagge, the protest was as result of the government's failure to implement pay changes agreed in 2009.
The government had promised to pay each lecturer 12,500 naira (£500) a month in tax-free income. The lecturers are still waiting.
Fagge said the government has also reneged on a memorandum of understanding it had entered into with the union in December 2011.
The decision to strike was reached at the National Executive Committee (NEC) meeting of ASUU held at the Olabisi Onabanjo University, Ago Iwoye.
"We have had several meetings to let government understand why these issues must be resolved but the more we meet and deliberate, the messier the issue gets,2 he said.
"It [the strike] is going to last for as long as the federal government wants it."
The strike has come two months after polytechnic lecturers walked out in a separate dispute.