Superannuation in Australia has existed in some form since the early 1900s, with styles of pension and super funds dating back even to the 1800s. However, the modern compulsory superannuation system known as the Superannuation Guarantee (SG) was introduced by legislation in 1992 under the government of Prime Minister Paul Keating. This law made it mandatory for employers to contribute a percentage of their employees' wages into a superannuation fund to secure financial retirement savings. Before compulsory super, super was generally limited to public servants and some white-collar employees. The compulsory contribution rate started at 3-4% and has gradually increased over the years. The SG was a significant reform that vastly increased super coverage across the Australian workforce.