In Part 1 of this two-part series, Evan Koenig explains why some economists are skeptical that staggered price adjustment can account for monetary policy's sustained effects on aggregate economic activity. In Part 2, Koenig looks at labor-market imperfections as a possible source of persistence....

A large part of the theoretical literature on informal economic activities in developing nations is founded on the assumption that labor markets are segmented. In this paper, we evaluate this premise with data from Argentina's permanent household survey for the 1993-1995 time period. We consider...