What’s keeping you up at night? If you’re like many of us, it’s work worries.

Fully 44% of American workers say they have lost sleep because they were worrying about work, with roughly one in four saying this happens to them at least once a week, according to a survey of 3,200 workers conducted by Harris Poll on behalf of CareerBuilder. Another survey from 2013 of more than 1,400 employees yielded even higher numbers: three in four had lost sleep over work issues.

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That may be because — even more so than in the past — work is stressing us out, often to the point of sleeplessness. Employee cases related to stress jump 28% over three years, according to data from employee wellness program provider Workplace Options, which looked at data from more than 100,000 employees, and has a vested interest in helping employees overcome this stress.

That said, psychologists and workplace consultants have seen a similar trend. “Numerous studies show that job stress is far and away the major source of stress for American adults and that it has escalated progressively over the past few decades,” according to The American Institute of Stress.

One reason: Thanks to technology, we are connected to our jobs more than ever before. “The 9-to-5 is now 24/7,” says Orange County-based workplace consultant Kristi Daniels. “Work and life boundaries are blurred or dissolving altogether.”

Furthermore, in some cases, there are fewer people doing more jobs. “Many jobs cut during the financial downturn haven’t been replaced, and employees don’t know if their employers plan to fill those positions,” says Rosemary Haefner, the chief human resources officer for CareerBuilder. “Because of that, workloads have increased, but not in line with raises.”

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American workers are taking on more responsibilities, multi-tasking more and dividing their time among many different tasks, says A.J. Marsden, an assistant professor of human services and psychology at Beacon College in Leesburg, Fla.; that, in turn “splits our attention and we are more likely to make mistakes, which in turn causes more stress.”

What’s more, sleep difficulties can make it more difficult to manage stress, says psychotherapist Holly Parker, who lectures at Harvard on psychology topics. “It’s a troubling snowball of stress and sleep deprivation, fueling itself.”

So what can workers due to minimize workplace stress (and thus improve their sleep)? “Manage your electronics,” says life coach Melissa Heisler, the author of From Type A to Type Me: How to Stop “Doing” Life and Start Living It. “When the communication pops up, you stop what you are doing, you read the email, and you say oh it’s not urgent, and you go back to your project and then another email pops up and you do the same thing,” she explains. “This is an amazing waste of time and focus. Turn off notifications for your email, texts and social media. Instead carve out time slots during the day to check communications.”

It’s also important to exercise, says CareerBuilder’s Haefner: “Regular exercise can increase self-confidence, relax you and lower symptoms associated with stress and anxiety.” And Parker says that a diet rich in omega-3s, found in fish, and high in fruits and vegetables can combat stress. Other experts recommend meditation and yoga.

But, of course, some work situations are simply untenable and you may need to find a new job. The good news: there are more job openings than there have been in years, government data shows.