Bernie Sanders thinks you should work fewer days.

The progressive from Vermont chimed in on the four-day work week debate on Twitter, writing: "With exploding technology and increased worker productivity, it's time to move toward a four-day work week with no loss of pay. Workers must benefit from technology, not just corporate CEOs."

Sanders was referencing the latest findings out of the UK on the four-day work week. A large-scale pilot program, spanning over 3,000 workers, found that workers slept better, firms made more money, and employees were less likely to say they did not have enough time to care for loved ones.

As the Washington Post reports, most of the companies involved in the pilot plan on continuing to use a four-day work week.

The concept of a four-day work week has increasingly caught on over the last few years, with firms and researchers alike taking the plunge to cut back hours without reducing pay.

As Insider reported in December, 4 Day Week Global — a New Zealand-based nonprofit — conducted a study involving 33 participating companies that employed 969 people based in the US, Australia, Ireland, the United Kingdom, New Zealand, who adopted a four-day work week in a pilot program over a six-month period, and it found it was a "resounding success on virtually every dimension."

"Companies are extremely pleased with their performance, productivity and overall experience, with almost all of them already committing or planning to continue with the 4 day week schedule," the report said.

"Revenue has risen over the course of the trial. Sick days and absenteeism are down," it continued. "Companies are hiring. Resignations fell slightly, a striking finding during the 'Great Resignation.' Employees are similarly enthusiastic. And climate impacts, while less well-measured, are also encouraging."

Some US companies have started testing out the idea, as well. A Chick-fil-A owner in Florida launched a three-day work week in November, and he received 400 applications for just one job opening due to the popularity of a shortened workweek.

This isn't the first time a four-day work week has caught the attention of lawmakers — the Congressional Progressive Caucus previously endorsed the "32-Hour Workweek Act," with Caucus Chair Pramila Jayapal saying in a statement at the time that it's "past time that we put people and communities over corporations and their profits — finally prioritizing the health, wellbeing, and basic human dignity of the working class rather than their employers' bottom line."

Rep. Mark Takano, a Democrat from California, proposed that legislation. He previously told Insider that a 32-hour work week — which would become the new standard under his proposal — would help Americans craft the new normal of work that they've been demanding.

"I think there was a Great Realization among a lot of Americans — how hard they're working and that they wanted to move on from the jobs that they were working at," Takano said. "So a four-day work week is something that connects a lot of Americans."