Amid a growing talent shortage, employees are getting more comfortable checking out the market for better jobs, recruiters say.

In a recent survey, 75 percent of 150 human resources, finance and marketing executives said they had no problem with looking for work on the job, up from 69 percent in 2002, according to Accountemps, a Menlo Park, Calif.-based staffing firm.

"The savviest companies never stop re-recruiting people once they've been hired," Accountemps Chairman Max Messmer said in a statement. "These organizations regularly sell top performers on their employment with the firm before they are tempted with an offer from a competitor."

Messmer added that employee retention will become even more important as the competition for talent heats up.