I'm somewhere in between the 2nd and 3rd answers...  We have a policy that was written up for the postdocs when our postdoc office was begun. It was originally a fairly detailed policy, but it was eventually beaten into a much shorter and vaguer paragraph before it was approved.

I have absolutely no idea. I've been very lucky to always have had great benefits, so I never felt compelled to look into it.

I'm also wondering why your poll is decorated with bombs and machetes and whatnot?

Re: not knowing about policies, I think many people don't think about them, whether they even exist, until there's a problem.

The only reason I know about ours is that I sat in on some of the meetings where this was being dealt with. I doubt more than 5 or so postdocs at our institution are aware of the policy. For those who want to find out, I bet your postdoc office would know, if there is one.

We have a set of postdoc guidelines available online, but it's pretty vague.  I looked into all of this when I was actually thinking of leaving my current job, I wanted to know the converse situation, whether I had to give a specific amount of notice to my supervisor.  It wasn't particularly helpful in answering my specific questions and it turns out that the guidelines really are that wishy washy.  But we have a new postdoc union now and they have done a lot to ensuring that a lot of this kind of stuff is hashed out and postdocs are more aware of their rights.

You can ask... but I might not answer  j/k

I wrote a couple of posts about the postdoc entity and associated issues. One thing I knew before I started writing is that policies and classifications of postdocs vary widely between, and even within, institutions. And this is a theme that keeps coming up in the comments. I was curious about the distribution of readers/readers' institutions. Further, this question in particular is to get people--especially grad students and new postdocs--to thinking about such things. Plus it provides a point of reference for previous and future posts.

At Postdoc U, there was a postdoc office and a clearly defined set of rules and regulations, including a handbook. Now that I'm a PI at Really Big U, it's interesting that postdocs here are treated better from a HR perspective (benefits, etc) but there is no institutional support or regulations.