Authorship Contracts in Postdoc

For those who did research as part of a clinical psychology postdoctoral fellowship... Did your lab utilize authorship contracts before embarking on a project? I have been given a paper that was rejected from a journal with the instructions to tear it apart and rewrite as I see fit. Would it be weird to ask for an authorship contract? Or should I just trust that since I'm a postdoc I don't need to ask for this? My postdoc is at the VA, if that makes any difference.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums