Peper became a researcher, and fulfilled several academic functions, including professor at the Erasmus University until he became Mayor of Rotterdam in 1982 at the age of 42. Rotterdam is the second largest city of the Netherlands, and Peper was one of the youngest mayors of a large city at the time. In 1984, an interview with Peper and his wife with
Ischa Meijer was published in
Vrij Nederland, a Dutch magazine, in which Peper was critical of citizens and rulers. The interview was perceived as arrogant, and seemed to be made while Peper was in a drunk condition. Peper made his apologies, and soon after he and his wife divorced. While Peper was mayor, the city completed its process of rebuilding after
World War II, which resulted in a new
skyline for Rotterdam. In the second half of his mayorship, Peper had a tough time with for instance his defeat on the formation of a city province (90% of the voters in a referendum were against). Peper was mayor until 1998, when he joined the government as Minister of the Interior of the Netherlands in the
second Kok cabinet. Starting in 1999, rumours were spreading that Peper had made incorrect declarations while he was mayor of Rotterdam. On 13 March 2000 Peper resigned as minister, according to himself to no longer bring problems to the public government, and to be better able to defend himself. Although a report on 17 March suggested that Peper did not act properly regarding the declarations, Peper won the legal procedures finally two years later. ==Later life and death==