| 15 June 1926: | The State Government Insurance Office (SGIO) was established as a public entity providing workers' compensation insurance to miners in the goldfields of Kalgoorlie in Western Australia. |
| 31 January 1939: | The State Government Insurance Act was assented to by Parliament. |
| 12 November 1943: | The Motor Vehicle (Third Party Insurance) Act 1943 was assented to by Parliament. This legislation requires owners of Western Australian registered vehicles to insure against liability arising from personal injury. |
| 1 July 1949: | A separate entity - the Motor Vehicle Insurance
Trust - was established to administer the Motor Vehicle (Third
Party Insurance) Act 1943. The Third Party Insurance Fund was established and commenced. |
| 1 January 1987: | The State Government Insurance Commission established
under the State Government Insurance Commission Act 1986, following
the amalgamation of the State Government Insurance Office and
the Motor Vehicle Insurance Trust. At the same time, the State
Government Insurance Corporation, trading as SGIO, was established
as a subsidiary of the State Government Insurance Commission to
compete with the general insurance market. The Compensation (Industrial Diseases) Fund was established and commenced. The Insurance Commission General Fund was established and commenced. The Government Insurance Fund was established and commenced. |
| June 1987: | The Employer's Indemnity Supplementation Fund was established and commenced. |
| 7 January 1993 | SGIO Insurance Limited established under the SGIO Privatisation Act 1992 and traded selective general insurance products prior to its sale by public float. The Corporation (no longer trading as SGIO Insurance Limited) ceased underwriting the reinsurance and life insurance business which was not transferred to SGIO Insurance Limited and still exists, running off its remaining claims liabilities. |
| 31 March 1994 | SGIO Insurance Limited was sold by public float, and ceased to be a subsidiary of the State Government Insurance Commission. |
| 1 July 1997 | The RiskCover Fund - the self-insurance Fund of the Government of Western Australia was established and commenced. The RiskCover Division - a business division of the Insurance Commission of Western Australia was also established to manage the RiskCover Fund. |
| 1 October 1997 | The name of the State Government Insurance Commission was changed to Insurance Commission of Western Australia. The title of the relevant statute was also changed from State Government Insurance Commission Act 1986 to Insurance Commission of Western Australia Act 1986 to reflect the organisation's new name. |
| 2 January 2003 | The Community Insurance Fund was established by
the Government of Western Australia to assist community organisations
based in Western Australia, to obtain affordable insurance cover.
The RiskCover Division manages the Community Insurance Fund on behalf of the Government of Western Australia who underwrite the Fund. |