Research Papers by Stanford Graduate School of Business Faculty
https://gsbapps.stanford.edu/researchpapers/
CAHRS' Working Paper Series at Cornell
http://www.ilr.cornell.edu/cahrs/paper.html
Institute for Research on Labor and Employment Working Paper Series at Berkeley
http://repositories.cdlib.org/iir/
Working Papers at Harvard Business School
http://hbswk.hbs.edu/workingpapers/