I’ve spent many years in HR, and I’m intimately familiar with the laws and regulations regarding background and reference checks.
When you apply to a company, that company is entitled to do whatever it wants – anything that’s legal, that is – to determine whether or not you’re likely to be a good employee. In that respect, Beadalin, you are incorrect in saying the company can’t call your previous employer without your permission. However, due to our highly litigious society, the overwhelming majority of companies do make sure to get your permission first, just to cover their asses. This isn’t necessary, but it does cut down on the lawsuits. Most of the time, this comes in the fine print on the application they all make you fill out. If you haven’t actually read it, almost all of them say something like this: “I certify that all of the above is true and accurate to the best of my knowledge. By submitting this application to XYZ Corp, I understand and give permission that XYZ has the right to verify the information I have submitted. This includes academic transcripts, reference checks, credit reports, and any and all other means,” blah blah blah.
However, on the flip side, most companies don’t generally volunteer information in response to reference checks, again because of the risk of litigation. Joe Blow may very well have been a disruptive, unmanageable employee. But his old company isn’t about to say that, because, even if 100% of his co-workers agreed, it’s still a subjective statement, a nonmeasurable judgment. They may be able to defend themselves in court, but it’s really not worth the trouble. They got rid of that guy; they don’t care what problems he causes other companies. That’s the legalistic, corporate position, of course. Individual people at the old company may feel bad about whoever gets stuck with this guy next. But their company’s self-protective policy means they can’t do anything about it.
In addition, the most valuable tool for defending these subjective judgements, the performance appraisal, generally isn’t very useful. The overwhelming majority of people are nonconfrontational; they don’t want to stir up trouble or make people’s lives difficult. Performance reviews tend, on the whole, to be softballs, i.e. they don’t detail all the negative stuff. Managers therefore “hope for the best” with a problem employee and turn in a vague review, thinking they’ll either just cope with the troublemaker or try to get him transferred somewhere else. This is a real issue; it happens all the time.
As a consequence, when that employee moves on, you don’t have a hard-and-fast paper trail that you can point to as justification for negative reference comments. If the ex-employee sues, and you have a bunch of vague, not-very-negative performance reviews, the jury will wonder whether the ex-employee’s paranoid ravings actually have a basis in fact. (Just one of the many ways “trying to be nice” can come back and bite you in the butt.)
Furthermore, the people who respond to reference interviews are often the frontline managers and co-workers, people who aren’t as familiar with laws and legalities as the folks in HR. (Yeah, I know, a lot of you love to hate the HR staff, but really, there’s a lot of stuff they do behind the scenes, trying to balance their almost irreconcilable mission of protecting the employees’ rights while simultaneously protecting the company. This conflict is what caused me to look outside HR for a new career track; it’s a painful, thankless life. Anyway…) What this means is, the manager or co-worker may respond to a reference question with something that’s totally, unjustifiably illegal. Here’s an example from my own work history, ridiculous and extreme as it sounds: The manager actually said of an ex-employee that “he was getting old and kind of slow.” When we heard he said that, we almost popped a collective blood vessel.
The bottom line is this: There’s nothing illegal about conducting a reasonable, well-designed reference and background check. However, there are so many potential pitfalls and high-risk traps that most companies don’t officially respond to informational requests beyond simple hire-date/term-date, title, and rehire status (yes or no), information that’s concrete and not subject to interpretation. Further, when a company conducts a reference check, they almost always ask the candidate to verify those references are available and willing to talk, thereby implicitly gaining further permission for the check from the candidate.
Hope that helps.
By the way, are you asking because you have a specific incident that concerns you, or is this just general curiosity? If it’s the former, you might consider posting the details to see if any SDMBers can offer perspective on the particulars, as opposed to a blanket description like I give above.