This report summarizes the final impact results for the national Employment Retention and Advancement (ERA) project. This project tested, using a random assignment design, the effectiveness of numerous programs intended to promote steady work and career advancement. All the programs targeted current and former welfare recipients and other low-wage workers, most of whom were single mothers. Given that earlier retention and advancement initiatives studied for these groups were largely not effective, ERA sought to examine a variety of programs that states and localities had developed for different populations, to determine whether effective strategies could be identified. In short, nine of the twelve programs examined in this report do not appear to be effective, but three programs increased employment levels, employment stability, and/or earnings, relative to control group levels, after three to four years of follow-up. (Contains 3 tables and 6 footnotes.) [This paper was written with the assistance of Aaron Hill and Sonya Williams. For the full report, see ED514699.]