Sorry, JiK, but to be an exempt employee requires more than just being on salary. It also requires (among other things) supervisory responsibility. Some libraries have tried to get around the FLSA by putting everyone on salary, only to learn that there's more to exemption than that.

In lieu of overtime I get six additional days of leave each year -- and believe me, I earn 'em!

This isn't the definitive Word from the government, but it gives a fair discussion of what defines an exempt employee.