The Professor will present the paper: 
The decline of U.S. workplace injuries, improvements in safety, and changes in occupational composition

Abstract: 
Using establishment-level administrative data and a novel empirical strategy, we show that changes in occupational composition overall did not contribute to the 57% decline in the U.S. workplace injury rates since 1999, contrary to intuition
that the U.S. has shifted towards a safer job mix. Instead, injury rates declined substantially within most occupations, especially those involving work with machinery, vehicles, and other mechanized devices. While declining employment in production occupations and growing employment in high-skilled occupations lowered the aggregate injury rate, these effects are small and offset by other compositional changes. We also provide novel occupation-specific workplace injury rate estimates.