A study from CareerBuilder, which polled more than 3,400 workers from a range of industries, found that 22 percent of workers are looking to switch jobs this year, a result in line with 2016’s 21 percent.

Workers 18 to 34 are more likely to want to change jobs, a 5 percent increase from last year at 35 percent, while just 15 percent of workers 35 and older responded affirmatively. CareerBuilder also found that 35 percent of workers of all ages regularly search for new jobs even when employed.

"Whether it's unemployed people trying to find their way back to the workforce or those who are currently employed attempting an upgrade to greener pastures, a new year makes many people set their sights on job hunting," CareerBuilder Chief Human Resources Officer Rosemary Haefner said. "To keep your top workers, you need to keep a pulse on what they're seeking. For example, poll your employees from time to time to learn more about their goals and motivations and how they want to be treated."

The study also found that the perk most likely to entice workers to stay with a company, or join a new one, was half-day Fridays, at 40 percent.

Other perks in the 22 percent to 27 percent range include on-site fitness centers, a dress code allowing jeans, daily catered lunches and individual offices.