Cleaners at secondary schools in East Lothian in Scotland are to take industrial action against a pay freeze.
The Unison union members are employed by private firm FES, which is a contractor to the council. The 12 union members voted 100 percent for an overtime ban.
Action was postponed for talks at Acas, but they collapsed after bosses refused to negotiate.
Unison regional officer Bill McAllister said the two years of pay freezes with no offer for next year is “unbelievable”.
He added that the workers “are on the minimum wage in a climate where the cost of living just keeps on rising”.