The U.S. wage structure evolved across the last century: narrowing from 1910 to 1950, fairly stable in the 1950s and 1960s, widening rapidly during the 1980s, and "polarizing" since the late 1980s. We document the spectacular rise of U.S. wage inequality after 1980 and place recent changes into...

The U.S. wage structure evolved across the last century: narrowing from 1910 to 1950, fairly stable in the 1950s and 1960s, widening rapidly during the 1980s, and quot;polarizingquot; since the late 1980s. We document the spectacular rise of U.S. wage inequality after 1980 and place recent...

We develop an assignment model of automation. Each of a continuum of tasks of variable complexity is assigned to either capital or one of a continuum of labor skills. We characterize conditions for interior automation, whereby tasks of intermediate complexity are assigned to capital. Interior...