In the US the university administration encourages even distinguished professors to retire in order to hire new faculty. It allows to hire another distinguished

In the US the university administration encourages even distinguished professors to retire in order to hire new faculty. It allows to hire another distinguished professor who will bring in more research money and quality students. Full professor slots are very limited even at the richest US colleges. A Supreme Court decision a couple decades ago prevents forced retirement of faculty at any age. But the administration guilts the professor about hurting department prestige. And the retiring professor can often negotiate some aspects of his replacement. Its resembles debates about when US Supreme Court justices should retire whom also have lifetime tenure.