In 2002, the German government tried to increase private old-age provisions by introducing incentives such as supplementary subsidies and tax credits. Since then, the so-called “Riester pension” has grown in popularity. Apart from subsidized pension plans, unsubsidized private pension...

Estimation procedures for ordered categories usually assume that the estimated coefficients of independent variables do not vary between the categories (parallel-lines assumption). This view neglects possible heterogeneous effects of some explaining factors. This paper describes the use of an...

Estimation procedures for ordered categories usually assume that the estimated coefficients of independent variables do not vary between the categories (parallel-lines assumption). This view neglects possible heterogeneous effects of some explaining factors. This paper describes the use of an...