TY - JOUR AU - Cooper,Russell W. AU - Willis,Jonathan TI - The Cost of Labor Adjustment: Inferences from the Gap JF - National Bureau of Economic Research Working Paper Series VL - No. 10006 PY - 2003 Y2 - October 2003 UR - http://www.nber.org/papers/w10006 L1 - http://www.nber.org/papers/w10006.pdf N1 - Author contact info: Russell Cooper Department of Economics The Pennsylvania State University 611 Kern State College, PA 16802 E-Mail: russellcoop@gmail.com Jonathan Willis Federal Reserve Bank of Kansas City 1 Memorial Drive Kansas City, MO 64198 Tel: 8168812852 Fax: 8168812199 E-Mail: jonathan.willis@kc.frb.org AB - We study labor adjustment costs. We specify a dynamic optimization problem at the plant-level, allowing for both convex and non-convex adjustment costs. We estimate the parameters of the adjustment process using an indirect inference procedure in which simulated moments are matched with data moments. For this study we use estimates of reduced-form adjustment functions obtained by the gap methodology' reported in Caballero-Engel as data moments. Contrary to evidence at the micro level in support of non-convex adjustment costs, our findings indicate that piecewise quadratic adjustment costs are sufficient to match these aggregate moments. ER -