国民年金
The normal age of pensionable retirement was sixty-five, and the pension paid was based on the average earnings one had received in the last four years of work ending two years before retirement. One could receive up to 60 percent of private-sector earnings and up to 66 percent of public-sector earnings. Older employees, at work before these pension plans became effective, were guaranteed a minimum pension of at least 29 percent if they retired before 1975, and 37 percent if they retired after this date. Like the national pension, wage-related pensions were indexed, and they increased each year. In addition, there were provisions relating to disability, early or late retirement, and survivors' benefits similar to those in effect for the National Pension Plan.