SSRN (the Social Science Research Network) can be very useful for legal researchers. Even better: you can use most of it free!
SSRN is a huge repository for scholarly papers. Law, economics, and business dominate, but other disciplines, from Anthropology to Sustainability, are also represented. You can search it free. And you can download hundreds of thousands of papers free. (Did I mention? Much of SSRN is free!)
Check out UW Law's page on SSRN to see some of the recent (and not so recent) papers by our faculty, staff, and students.
To help you get started, we've posted a guide explaining some of the ways you can use SSRN.