Working papers allow access to the latest research without the delay caused by a lengthy publishing process of academic journals. The field of economics has a strong tradition of working paper exchange. Working papers are produced:
by researchers at universities to be later published in books, journals, or presented at conferences, and
by governmental bodies, NGOs, research centers and professional organizations, such as the Federal Reserve System, the World Bank, the National Bureau of Economic Research, etc.
The largest bibliographic database available freely on the Internet, dedicated to economics. Provides access to RePEc, a collaborative database of working papers, journal articles and software components.
Founded in 1920, the NBER is a private, nonprofit, nonpartisan research organization dedicated to promoting a greater understanding of how the economy works. Their full-text archive of working papers covers 1973-present.
SSRN is a preprint server for economics, business, law, and humanities. Many universities and research centers publish their working papers at SSRN. Uploading and searching working papers is free; Some fee-based sources are also available.