Yep, I worked and separated from an employer on so-so terms. He admitted, very grudgingly, that it was absolutely his professional responsibility to fill it out, and certify my hours, otherwise there was going to be lots of issues with the state accountancy board and his liability insurance. (I made a few copies of my paycheck stubs, just in case).
Consider that it's also a liability for your former employers not to sign. How many sketchy things did your former employers do that you know of and remember (or even have tangible proof of)? How much of a headache does your former employer want with the state accountancy board, professional liability insurance company, current clients, and any other government regulatory agency, if it ever got out that the employer's actions were risky, questionable, sketchy, unethical?
Wedger - check with your state. Some states it's 10 years, never, 4 years, etc.
Couldn't pass again!