When it comes to the office, the occasional little white lie may be a necessary form of diplomacy. Some experts even recommend, not outright lying about your age, but if you’re over 37 you may want to make your age a little less obvious on your resume. Ageism is an unfortunate problem for job seekers, especially in this tight market. It’s also usually okay—sometimes essential—to fib when the boss asks your opinion on his or her personal appearance. Sometimes you also have to take one for the team and help out a coworker by keeping quiet about small mistakes.