"Open-access (OA) literature is digital, online, free of charge, and free of most copyright and licensing restrictions. What makes it possible is the internet and the consent of the author or copyright-holder." From Peter Suber's Very brief introduction to Open Access. Learn more : Open Access and Scholarly Publishing
Social Science Research Network
Browse the SSRN eLibrary, view current Top Papers or search the electronic library for papers by Title, Author, or Journal/Topic.
OpenDOAR
Search by subject area business & economics. There are 156 repositories in this category.
RePec (Research Papers in Economics)
Research papers in economics and related science. Works in accounting, finance and other related areas.
These databases allow you to search specifically for OA dissertations and theses:
Browse lists of high-quality open-access journals. More information on Assessing Journal Quality.