TY - JOUR AU - Lazear,Edward P. TI - Why Is There Mandatory Retirement? JF - National Bureau of Economic Research Reprint Series VL - No. 160 PY - 1981 Y2 - April 1981 UR - http://www.nber.org/papers/r0160 N1 - Author contact info: Edward P. Lazear Graduate School of Business Stanford University Stanford, CA 94305 Tel: 650/723-9136 Fax: 650/723-0498 E-Mail: lazear@stanford.edu AB - ER -