Summary: This paper focuses on the development of the funded, occupational pension (OP) system in Denmark. Launched in 1987, as a grand agreement between social partners backed by the government, and as part of the collective wage bargaining process, the Danish OP system differs from the set-up in most other countries, where OP schemes typically have been introduced as part of the legislative process. The OP schemes, being a major component of the overall Danish pension system, have attracted a lot of international attention in recent years and play a key role behind the system’s success with respect to achieving satisfactory coverage, providing high replacement rates and not least, for keeping fiscal policy on a sustainable path. Finally, the paper discusses a number of future challenges, mainly related to the interaction between private and public pensions in a welfare state.