Yep, I now ask to see these agreements before signing a job offer after making a similar mistake at a previous company.

I did too, and they made verbal promises that they went back on. Next time I'll make sure to ask in an on-the-record communications medium.

Same here. Was working on some research projects and the future employer's recruiter said my new manager loves giving back and while I would have to reduce my hours on the project it should be fine. Legal did not agree, minor he-said-she-said spat and I reneged on the offer. I hate feeling like I'm an indentured servant for a company that wasn't even willing to match my existing pay.

Oh, wow. Nice to start off a working relationship by lying to the new hire. I might have signed if I were in a financial bind (e.g., just moved cross-country and couldn't afford to be unemployed), but I would immediately start looking for another job.