TY - JOUR AU - Kniesner,Thomas J. AU - Viscusi,W. Kip AU - Woock,Christopher AU - Ziliak,James P. TI - How Unobservable Productivity Biases the Value of a Statistical Life JF - National Bureau of Economic Research Working Paper Series VL - No. 11659 PY - 2005 Y2 - October 2005 UR - http://www.nber.org/papers/w11659 L1 - http://www.nber.org/papers/w11659.pdf N1 - Author contact info: Thomas Kniesner Syracuse University 426 Eggers Hall Syracuse, NY 13244 E-Mail: tkniesne@maxwell.syr.edu W. Kip Viscusi Vanderbilt Law School 131 21st Avenue South Nashville, TN 37203-1181 Tel: 615/343-7715 E-Mail: kip.viscusi@vanderbilt.edu Christopher Woock E-Mail: christopher.woock@conference-board.org AB - A prominent theoretical controversy in the compensating differentials literature concerns unobservable individual productivity. Competing models yield opposite predictions depending on whether the unobservable productivity is safety-related skill or productivity generally. Using five panel waves and several new measures of worker fatality risks, first-difference estimates imply that omitting individual heterogeneity leads to overestimates of the value of statistical life, consistent with the latent safety-related skill interpretation. Risk measures with less measurement error raise the value of statistical life, the net effect being that estimates from the static model range from $5.3 million to $6.7 million, with dynamic model estimates somewhat higher. ER -