So there's the obvious reason why people go to the bathroom at work but there are many other HIDDEN reasons (and if you work in an office you may know one of two of these:)
92 percent of people say they have visited the office restroom to simply get away from the office "noise" or to cool off after getting angry at a coworker.
33 percent of people work on assignments in the restroom
12 percent of people do their nails
15 percent of people go to the bathroom to make a private phone call
10 percent of office workers use the restroom for a forbidden office romp