School support staff in Northern Ireland are to go on a 24-hour strike next Friday as part of a pay dispute.
The action by Unite trade union members coincides with a strike by Translink bus and train drivers on the same day.
Unite said the strike by classroom assistants, cleaners, caterers, and admin and transport staff would cause significant disruption.
Last week thousands of non-teaching staff walked out of hundreds of schools to call for an increase in their wages.
Stormont's Department of Education has previously said it cannot afford to give pay rises to school support staff.
Announcing the latest strike, Unite's Sharon Graham said workers had been left with "no alternative but to escalate their strike action".
"The school support staff workers have the full and continuing support of Unite in their campaign for fair pay," she said.
