More than 90% of senior leaders at companies where AI is already embedded say they’re “considering, among many other options” a four-day workweek. 

In one recent survey, not a single fully AI-integrated company said they’d rule it out. Yes, the numbers are that striking. 

So, is the four-day workweek finally becoming a reality? 

After 40 years of placing people in jobs, I’ve learned to be both optimistic and realistic at the same time. In this case, though, the research seems highly convincing. 

The largest controlled trial ever conducted on shorter workweeks tracked nearly 3,000 employees across 141 companies in six countries for six months. 

Burnout dropped significantly. Job satisfaction rose. Mental and physical health improved across every measure. 

And 90% of those companies chose to keep the four-day schedule permanently. The UK, Germany and Iceland have run their own trials with similarly strong results. 

A total of 2.7 million workers in the United Kingdom — about 11% of their workforce — now work four days. Iceland has 86% of its workforce on shorter hours or with the right to request them. 

The productivity argument is real, too. 

Studies show nearly 40% of U.S. workers are already using generative AI, saving an average of two or more hours per week. 

Some research puts the savings closer to seven or eight hours weekly for regular AI users. That’s nearly a full workday recovered. 

There’s also the benefit of fewer meetings, lower absenteeism, reduced sick days, less turnover, and overall happier employees due to reduced job stress.

Companies like Buffer report a 22% productivity increase since going to four days permanently, and an 88% jump in job applications. Those are numbers any employer should pay attention to. 

But there’s a catch. And it’s a big one. 

Promised the workforce

Every technology revolution in history — steam, electricity, computers, the internet — has promised the workforce more free time. 

But none of them actually delivered on that promise. 

U.S. workers have been averaging 34 to 35 hours a week (including part-time workers) for decades, with no meaningful reduction despite waves of automation. 

The most recent data tells a similar story. Goldman Sachs found no measurable gains in actual earnings or hours from AI adoption. 

A separate analysis found that some workers in AI-heavy jobs actually worked more hours because they’re now using a faster tool.

The failures are instructive, too. 

Bolt, the fintech company, reversed its four-day policy after employees simply compressed 40 hours into four days without any real workflow change. 

A San Diego company — Tower Paddleboards in Mission Beach — tried five–hour workdays, saw 50% revenue growth, then lost nearly half its staff within 90 days. 

The lesson: Dropping a day without redesigning how work actually gets done sets everyone up for burnout, not relief. 

There’s also an equity problem nobody wants to talk about. 

The four-day week and AI productivity gains overwhelmingly benefit white-collar knowledge workers — tech, marketing, legal, finance. My friends in hospitality, health care, construction and retail face a completely different reality. 

Something less structured

A four-day work week for a nurse usually means compressed 10-hour shifts. For a hotel housekeeper or a restaurant server, it likely means something less structured. Same with hybrid workers. 

Some industries have profound flexibility, and some have none. 

Where does that leave San Diego employers and workers? The opportunity is real, but it won’t happen automatically. 

If you’re a knowledge worker, start demonstrating your AI productivity gains now. Document them. 

Make the case to your employer that the time saved is real and should be shared with the worker. If you’re an employer, think carefully before you mandate a four-day work week without first redesigning workflows. 

Companies that succeed choose willing teams, restructure how work gets done, and treat the schedule change as a genuine commitment — not a recruiting gimmick. 

AI could be the differentiator that makes the four-day work week possible. Whether it becomes real or not depends on whether employers decide to pass along the time dividends. 

History says they’ll demand more output. 

It may be time to prove history wrong.

Blair is co-founder of Manpower West Staffing and can be reached at pblair@manpowerwest.com.