Hey there. Orianna here from Fortune.

It’s easy to get swept up in the idea that AI is coming to save us from the five-day grind. Bill Gates, Elon Musk, Jamie Dimon, and Jensen Huang have all made the same prediction in recent years: Automation will absorb the dull stuff, free up your time, and the four-day workweek will become standard. Musk has even gone further—predicting work will be entirely optional within a decade.

But Mark Dixon isn’t buying it. As CEO of IWG—the world’s largest flexible workspace provider, with over 8 million users and 85% of the Fortune 500 as customers—he has a front-row seat to how companies actually operate.

“Everyone is focused on productivity, so no time soon,” he told me flatly.

And it comes down to one simple principle: As the saying goes, businesses want their pound of flesh.

The reality is that costs have skyrocketed. But they can’t raise prices on customers without losing them. So if AI frees up time at your desk, businesses probably won’t hand those hours back to you. Instead, they’ll fill them with more work. Any efficiency gains get quietly recycled into output—not leisure.

The only world where Dixon sees a shorter workweek happening is if there’s not enough work to go around, rather than bosses suddenly becoming benevolent.

But as he pointed out, the opposite is more likely. Every major technological shift—from the Industrial Revolution’s automated looms to the explosion of the PC—was met with the same fear of mass unemployment. Instead, new industries bloomed, new roles emerged, and the workforce adapted.

So no, the four-day workweek isn’t coming. If anything, workers need to be prepared for longer to-do lists.

“AI will speed up companies’ development, so there’ll be more work, it’ll just be different work,” he says. Consider yourself warned.

—Orianna Rosa Royle
Success Associate Editor, Fortune

Got a career tip or dilemma? Get in touch: orianna.royle@fortune.com. You can also find me on LinkedIn, TikTok, X, and Instagram.