10.2190/FDWX-QY36-FU3L-EQW9 FDWXQY36FU3LEQW9 3 Arbitrator Decision Making in Substance Abuse Cases 29 39 20020509 20020509 20020509 20020509 FDWXQY36FU3LEQW9.pdf http://baywood.metapress.com/link.asp?target=contribution&id=FDWXQY36FU3LEQW9 1 Ahmad R. Karim Lawrence J. Haber Indiana University, Fort Wayne The approach taken in this study is to regard substance abuse discharge cases as specific instances of discharge cases in general. Consequently, in trying to model arbitrators' decisions, the possible predictors of the outcome of arbitration hearings are derived from those factors found to significantly affect the outcome in earlier discharge studies. Discriminant analysis is used to determine those factors that significantly affected the outcomes of substance-abuse discharge cases in the period 1985-1993. While most of the predictors thought to influence arbitral decision making operated in the anticipated manner, there were some surprises. In particular, neither management's concern for safety nor the grievant's prior work record affected the outcome of the cases.