Retirement age

Bismarck introduced the pension system as part of a broader strategy to undermine the growing appeal of the Social Democratic Party. By offering state-sponsored insurance against old age, disability, and sickness, he aimed to demonstrate that the German Empire could address workers' needs without the revolutionary changes socialists demanded. The Old Age and Disability Insurance Bill of 1889 was the third piece of social legislation in this strategy, following sickness insurance in 1883 and accident insurance in 1884.

The original eligibility age of seventy was set deliberately high. Life expectancy at birth in Germany in the 1880s was roughly 40 years, though this figure was heavily affected by infant mortality. Among those who survived to adulthood, life expectancy was higher, but reaching seventy was still uncommon for working-class Germans. The pension amount was modest, designed to supplement rather than replace family support.

In 1916, during World War I, Germany lowered the pension eligibility age to sixty-five, where it remained for decades and became the model other nations adopted. The United States Social Security Act of 1935 chose sixty-five as its retirement age partly by reference to the German precedent. Other countries established their own thresholds: France set its initial state pension age at sixty-five in 1910, the United Kingdom at seventy in 1908, later reduced to sixty-five.

As life expectancy increased throughout the twentieth century, the relationship between the retirement age and the remaining years of life changed dramatically. By 2020, life expectancy at birth in Germany had risen to approximately 81 years, according to the World Bank. A threshold originally designed to exclude most of the population from benefits had become a gateway to fifteen or twenty years of post-work life. Many countries have since raised or are in the process of raising their state pension ages in response.