This paper analyses annual, age-specific retirement rates in Germany between 1971 and 1991. The time-series data show significant changes in overall and age-specific retirement behavior over the 21 year period. The literature provides two alternative explanations for the observed developments:...

In this paper we show that the 3SLS estimator of a system of equations is asymptotically equivalent to an iterative 2SLS estimator applied to each equation, augmented with the residuals from the other equations. This result is a natural extension of Telser (1964).