School support staff at four local authorities will walk out on Wednesday in a continuing dispute with councils over pay.
Workers including janitors, cleaners and pupil support assistants are among those who will take strike action in East Renfrewshire, Renfrewshire, Inverclyde and Glasgow – which will see hundreds of schools close.
Some schools may remain open for pupils in S4-6 preparing for exams.
Wednesday’s action is part of rolling strikes by Unison members, scheduled to take place across the country in the coming weeks after the union rejected a pay offer from the Convention of Scottish Local Authorities (Cosla).
The revised offer represents a minimum increase of £2,006 for workers on the Scottish local government living wage, and a minimum of £1,929 for those above the rate.
The living wage of £10.85 will rise to £11.89 per hour – equivalent to a 9.6 per cent increase.
Unison has also served notice of further strike action to South Lanarkshire, Dumfries and Galloway, Edinburgh and Fife councils – which will take place on November 8.
Members are also expected to gather on Buchanan Street in Glasgow for a rally at 12pm on Wednesday.
Johanna Baxter, Unison Scotland head of local government, said: “The last thing we want is to cause disruption for pupils and parents, but school staff have been left with no other option.
