It’s hard to believe, but the year is closing and the holidays are approaching, which, in addition to closing the books and a few final deals, for many company means planning the annual holiday party. This is not as simple as it seems. When employees cut loose at company-sponsored functions, the results can lead to sexual harassment charges and other liability issues.

Poor employee behavior at holiday parties can exacerbate existing problems. Or too much liquor can bring out the worst in people who normally act professionally. About half of companies with holiday parties planned to serve alcohol last year, which can lead to multiple issues, according to a survey by outplacement firm Challenger, Gray & Christmas, Inc. “In addition to the added cost, serving alcohol adds a level of risk that most companies should strive to avoid,” said CEO John A. Challenger in a press release.