You’ve probably heard of “quiet quitting,” the trend that saw employees doing the bare minimum of work and silently checking out of jobs they didn’t enjoy but financially needed. Then came “loud quitting,” which is essentially what it says: Making a lot of noise about why they’re walking.

But now, workers are so frustrated with toxic workplaces they’re ditching jobs without any warning or resignation letter—or rather, “revenge quitting.”

Unfortunately, it’s not just young new hires who are leaving their employers high and dry without any formal notice or so much as a heads-up that they won’t be at their desks the next day: According to a report on revenge quitting by the job board Monster, nearly half of U.S. workers say they’ve done it.

The majority were in their post for over two years before deciding to silently walk out of their job.

“Sudden resignations aren’t just individual exits, they’re warning signals flashing across workplace culture,” says Monster’s career expert Vicki Salemi. “When workers walk out without notice, it’s often because they’ve lost trust in leadership or feel their voices aren’t heard.”