Citizens under 65 with their household registered in ROC and are qualified for one of the followings should, except for those should participate or have already participated in other related social insurances, take part in the Insurance and become the insured persons
1. Aged 25 or above and non-recipient of old age benefit of related social insurances.
2. Before the implementation of this act, recipient of old age benefit of other related social insurances with insurance period less than 15 years, or lump sum payment of old age benefit of other related social insurances less than NT$ 500,000, except for insurance period or lump sum payment of the old age benefit of the labor insurance.
3. Within 15 years of the implementation of this act, recipient of old age benefit of other related social insurances with insurance period less than 15 years, or lump sum payment of old age benefit of the labor insurance and other related social insurances totally less than NT$ 500,000. But for recipients of old age benefit of the labor insurance before the implementation of the pension scheme of the labor insurance, the insurance period or payment for old age benefit of the labor insurance is not calculated.

For the insured persons qualified for previous article, the effect of insurance will start from zero hour of the day of qualifying for the Insurance.
The insurance effect from previous paragraph will terminate at 24:00 one day before the insured persons lose their qualification. For the case of death, the effect will terminate at the same day of death.

The insurance periods should be combined for calculation when the insured persons participate in the Insurance again after previous withdrawing.