According to a recent survey by Career Builder, an online job site and global leader in human capital solutions, a third of US employees plan to shop online during work hours this holiday season.

Employers may tend to be more lenient during the holiday season, but experts caution workers to be aware of their employer’s electronic communications policies as they monitor Internet and e-mail use and have instituted stricter policies regarding social media. It is better to do your non-work related activities online during your personal time, such as the lunch hour.

Experts caution workers that 20 percent of employers have fired someone for doing non-work related activities online during work hours, and 5 percent have fired someone for holiday shopping online.

The number of workers planning to shop online during work hours has increased from 29 percent last year to 32 percent this year. More than half of employees say they use the Internet for non-work activities on the job.

The survey included more than 3,100 employers and 4,700 workers nationwide.