Using a substitution property of worker’s types (productivity and time preference), we propose an explanation for both fixed-wages and wage differentials. Fixed-wages result in bunching at the optimum. Equally productive workers with different time preference accept different wages.

In the last decade the ownership structure of Australia's life insurance industry has undergone a fundamental change. Traditionally, the sector had been dominated by a group of large mutual associations which had historically been the market leaders. In the space of less than a decade, this form...