1) A survey found that about 1 in 5 workers attends office happy hours at least once a month, most commonly to bond with coworkers or spend time with their boss. 2) Certain industries like professional services, financial services, IT, and sales had the highest rates of happy hour attendance. 3) While after-hours socializing can help boost camaraderie and careers, there are also risks like overdrinking and inappropriate behavior that can damage reputations. Experts recommend attending occasionally but pacing yourself.