Ever wondered who the happiest employee in the USA might be? Well, thanks to a survey, we now may have a clue.

The Keas Co. has produced an Employee Happiness Index based upon questions targeting 762 employees enrolled in employer-sponsored Keas health plans. Based on the returns, Keas suspects that the nation's happiest employee is "a 62-year-old woman, living in Chicago, who loves the executive assistant job she's had since 1990."

OK, so Keas didn't come up with a name. But odds are you have some happy, engaged workers who fit that description. Her age makes her a boomer, who tend to be the happiest and most engaged of the Big Three generations (including Gen Xers and millennials). Women tend to be happier than men, Keas found, and Midwesterners who've held jobs for a while are overall happier than folks from others parts of the country.