Comment by preg_match

My understanding is that the "were they employed" thing is covered by background checks. I know equifax (experian? I always get them confused) have a product where they will reveal your past titles AND your salaries. It's a little wild and I don't like that, but the point is that I don't think you gain much info from "yes they worked here" from HR.

A reference is really intended as a statement of character IMO. "They worked here" from HR, who doesn't know you, is not that.