As John Marburger stated in his keynote address  at the 2002 Postdoc Network meeting, "bringing data on postdoc issues to the attention of institutional and government officials will inevitably lead to improvements."
A credible, quantitative database will serve as the foundation supporting necessary reform initiatives and a baseline from which to track progress. Several articles on postdoc surveys have been published on the Postdoc Network and Science?s Next Wave, including one that surveys the surveys . For those of you interested in creating a survey for your own institution, we have put together a list of survey resources available on Next Wave. We also encourage you to contact Sigma Xi, who in collaboration with the National Postdoc Association and Science's Next Wave, is developing survey tools for a national postdoc survey effort .
These articles give a great overview of the continuing efforts to define the postdoctoral experience.
Read about how attempts by postdocs to gather data at the University of California, San Francisco (UCSF), sparked survey efforts  at several other universities, including the University of Cincinnati and UC Berkeley.
A 1996 collection on The Postdoc Condition  features several early survey efforts at UCSF, in Canada, and by a postdoc in Jerusalem trying to get the pulse of international postdocs.
Working at other times in relative isolation, postdocs appreciated the opportunity to share survey results  at the 2001 Postdoc Network meeting.
The Who?s and How?s of Survey Design and Analysis
In the majority of cases, postdoc associations have taken the burden of preparing, distributing, tabulating, and analyzing survey results. However, institutions, professional societies, and funding agencies have also played a significant role in assessing the postdoctoral experience. Check these links for information on specific surveys.
 UCSF Postdoctoral Scholars Association 
UC Berkeley 
Professional Society Surveys
Funding Agency Surveys
National Postdoc Surveys