Employers will have to offer four-day week under new plans

Employers will have to offer flexible working hours - including a four-day week - to all workers under government plans.

To receive their full pay, employees would still have to work their full hours but compressed into a shorter working week - something some workplaces already do.

Currently, employees can request flexible hours as soon as they start at a company but employers are not legally obliged to agree.

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The Labour government now wants to make it so employers have to offer flexible hours from day one, except where it is "not reasonably feasible".

It is understood Deputy Prime Minister Angela Rayner is behind the move and wants to introduce legislation on it this autumn after consulting with unions and businesses.

The government has denied employers will be forced to allow staff to work four-day weeks, or make employees work a four-day week.

However, Conservative shadow business secretary Kevin Hollinrake said businesses were "petrified" by the plans.

"Despite warning after warning from industry, Angela Rayner is pressing ahead with her French-style union laws that will make doing business more expensive in the UK," Mr Hollinrake said.

A Department for Business and Trade spokesman said: "Any changes to employment legislation will be consulted on, working in partnership with business.

"Our Make Work Pay plan is designed around increasing productivity and creating the right conditions for businesses to support sustained economic growth.

"Many employers already provide good, family-friendly conditions for their workers because they know that doing so improves morale and retention.

"We are working in close partnership with business and civil society to find the balance between improving workers' rights while supporting the brilliant businesses that pay people's wages."

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Last year, the largest trial of its kind tested how a four-day week would work, with 54 (89%) of the 61 companies involved still operating the policy a year later.

The study by the Autonomy thinktank found every project manager and CEO consulted said the four-day week had a positive impact on their organisation.

As part of Labour's "New Deal for Working People", the government has promised to ban zero-hour contracts, end "fire and rehire" practices and give workers the "right to switch off".