Hundreds of people attended solidarity rallies organised by the Scottish Trades Union Congress (STUC), with members of the EIS, PCS, UCU and Unison unions among those taking part in an event on Buchanan Street.
Courts and tribunals are being disrupted, but those due to attend court on Wednesday are still advised to do so by the Crown Office.
Higher education workers have walked out as part of their ongoing dispute over pensions, pay and conditions, with members of the University and College Union at the majority of Scotland's universities taking strike action.
