It's a legal compliance within what should be your standards anyway... sign it. No big deal.

You just have to be careful about language. I had a company that wanted me to sign a non-compete that said I wouldn't work with any tools or languages that used tcpip to collect data and put it into a database. I had to explain to the lawyers that meant I could never work at my job, ever again, depending on how the document was interpreted. Needless to say, I didn't sign it. They came up with a better one.