Does your office celebrate the spookiest holiday of the year? If so, then your biz is in the minority this October 31. According to a new survey from  www.Vault.com, about 37 percent of employees say they celebrate the holiday with their co-workers, and only 27 percent actually dress up in a costume at the office. Of the respondents whose offices ignored the holiday, many expressed disappointment. Of course, it's a tough decision. If you do allow employees to don costumes, you risk the chance of workers showing up in risqué, indecent and possibly offensive outfits that would be more distracting than anything else. On the other hand, allowing costumes within reason could bring your team closer together. Or, there's always the compromise: Allow trick-or-treating from office to office, or bring Halloween treats to share during an afternoon office party.