Chile made every worker a pension shareholder so no government could raid the system

Chile's pre-1981 pension system, like most pay-as-you-go schemes, collected contributions from current workers to pay current retirees, with the government setting benefit formulas that shifted with every political cycle and with more than thirty separate funds carrying different, often unequal, rules for different sectors.

The conventional repair for an underfunded pay-as-you-go system is a parametric fix — raise the retirement age, raise contribution rates, cut future benefits — all of which are politically unpopular precisely because no worker sees an individual stake in the outcome; the pain is collective and the fight is fought entirely in the political arena, where reforms get reversed as soon as power changes hands. Labor Minister José Piñera set out to design a system reform that couldn't simply be undone by the next government.

Replaced the state promise with individually owned accounts, making expropriation costlier than adjusting a formula.

Individual accounts are property, so expropriating them carries higher political cost than adjusting a formula.

Workers with a visible balance have personal reason to resist reform reversal.

Ownership shifts defense from diffuse collective to millions of individual stakeholders.

When a collective benefit is repeatedly reversed, give each participant a personal, legally-owned stake so they become defenders of the arrangement.

The reform proved durable for decades; by the 1990s ten other Latin American countries adopted variants of the model. The 'Chilean model' became the reference design cited and debated in pension reforms worldwide, including partial adoptions in Sweden, Poland and elsewhere, while inside Chile it also became a focal point of the country's later political debates over inequality and retirement adequacy, eventually prompting reforms to the original design.