The move will boost life stability for insured persons and support the ageing society, said SSO chief Dr Suradech Waleeitthikul on Monday.
The amendment is in line with the policy instruction of Labour Minister General Sirichai Distakul to create improved life stability for people while working and in retirement.
The move requires an amendment to the Social Security Act 1990, he said.
The SSO is conducting a feasibility study that will be presented to the minister soon, he added.