Public sector strikes have hit schools and services around the UK today. People from several trade unions were expected to take part, including council staff, teachers, firefighters and civil servants.
The walk out is over disputes with the government about pay, pensions and cuts. Pay is thought to be the main factor, after public sector salaries were frozen in 2010 and a 1% cap on pay rises was introduced in 2012.
Picket lines are expected outside courts, council offices, job centres and fire stations across the country with thousands of children also missing classes due to school closures.
Unison boss Mr Prentis told BBC Breakfast workers had been left frustrated by pay freezes: "When Cameron brought in the two-year pay freeze, our local government workers, our members, had already had a one-year pay freeze.
"So they've had a three-year pay freeze and then a 1% increase when inflation has gone up by something like 20%," he said.