Medicol said:
I think it depends, if you take the whole country's companies, then it'll be too many for HRers to be "connected". But in a city, the probability for HRers of one company to be friends or past colleagues of those of another is much higher. Private information about the employee in question being spread via skype or any type or messengers isn't uncommon. So it'll become harder for a candidate to lie about his qualifications. :(
More likely, it will be people in the actual work area that are "connected" - hence the good old boy network. Since HR is so often such little help, the first thing you do with an applicant you don't know is start checking with other people you do know that worked in the same company.
If HR can't give out information, then other people in work center certainly can't give out info. But that doesn't carry much weight if you're talking about friends that have worked together in the past. They'll share a lot of information about people they've worked with because they're going to be in the same position you are sometime in the future - and you've got to get information from somewhere.
My favorite was a guy I used to work with. When he worked with us, he would sometimes log onto his work e-mail from home and pretend to be at work when he was actually at home. And then there came a time when he just stopped showing up for work at all. And stopped answering any calls from work. Our boss tried to fire him, but that was impossible when the guy wasn't coming into work and wasn't answering any calls from work. Our boss finally had the police show up at his door just to make sure he was still alive, seeing as how it was possible the reason he stopped showing up for work and answering calls was because he was lying dead on the kitchen floor.
After the visit from the police, the guy decided he better go to work. Except his badge had already been deactivated. He calls his work center, the boss isn't around, and no one in the work center wants to be the guy that goes out and tells him he's fired. They left him out there until the boss finally got back.
Fast forward ten years later. The company we worked for had been bumped off the contract and, as often happens, most of the workers just got hired by the new company that bumped the old company off the contract.
That guy that just stopped showing up for work? He applies for a job with the new company not realizing that he's actually applying for the same job he had ten years ago with quite a few of same employees still around, but now working for the new company. We had fist fights over who would get to do the job interview (only for our manager to cancel the job interview completely once he realized we were vying for cruel entertainment on company time).
HR may have rules about the info they give out. But somebody, somewhere remembers you and all the stuff you did at your old job(s) and they'll talk to their friends even if no one else.