A company I used to work for had a "decent" reputation, and a decent operation that began to deteriorate. As it began to fall apart, the company started scheduling pilots for illegal flying (in the lower 48) non-stop. Eventually, when they accepted the trip, and the company "audited" the hours, they would come to the pilot and say that they were putting a PRIA-reportable letter in their file... but if they agreed to stay (6-12) more months, they'd remove the letter.
I believe there were people on here who are familiar with that/have had that happen to them.
That company is now out of business, but rumor has it that the former CP was well enough known to airline hiring departments for the nastygrams he put in pilot's PRIA records that he was universally turned down by all the airlines he applied to.
The company is out of business now, and as far as I know, their PRIA process is history. But if that info went straight into a database, they could basically retain pilots forever. And I can think of quite a few regionals and cargo operators that, from what I've heard, would happily follow suit to retain pilots. (read: keep pilot pay low)
I dunno.