NEW YORK—Unofficial holidays can be quite the divider. While some people love an excuse to celebrate National Wear Your Shirt Inside Out Day (the first Tuesday of August), others might find it a bit annoying to have to dodge flying objects on National Paper Airplane Day (May 26), for example. But with this week comes an unofficial holiday that we might all be able to get behind: National Fun at Work Day. Celebrated on Jan. 28, National Fun at Work Day encourages us all to inject a little fun into our day-to-day lives. Read More