Found out via human resources but it varies by state just in case anyone else is interested here's what I got!
In Colorado, if their license has been suspended or revoked, it is 5 years from the date of reinstatement for them to drive. They cannot have more than 3 citations in the last 3 years total to drive. If his license was not suspended or revoked, he would just have to meet the standard of no more than 3 citations in 3 years. But that is for Colorado, not sure that helps if he is no longer in Colorado. Looks like I'm golden! Thanks for everyone's help!!!!!