What is "tillaggspension"

Tilläggspension ("Supplementary pension") is a government-run pension system in Sweden, paid to wage labourers on retirement. It was originally enacted on 1 January 1960 by an act of parliament, and funded by payroll taxes paid by the employers. The original system was called Allmän tilläggspension ("General supplementary pension", ATP). The systems are called "supplementary" because they are paid in addition to the general age pension, and the size of the payment is dependent on wages earned and the number of years as a wage earner.