Quantile regression, as introduced by Koenker and Bassett (1978), may be viewed as an extension of classical least squares estimation of conditional mean models to the estimation of an ensemble of models for several conditional quantile functions. The central special case is the median...

Most workers have one employment contract that is explicit and another one that is implicit. The explicit employment contract specifies working hours, compensation, and job tasks. The implicit contract involves expectations about the extent to which the employment relationship is likely to...