The unit has been buying insurance with me since 1991, and I haven't bought it since 1999, do I need to make up for it now?

Needed.

Taking the city of Chengdu as an example, according to the "Chengdu Urban Employees' Basic Medical Insurance Measures Implementation Rules", Article 17 stipulates that: "Before the implementation of the Measures to participate in the city's urban employees' basic medical insurance, the total number of years of contributions and hospitalization co-ordination of the total number of years of contributions reached 15 years, and will no longer be paying the basic medical insurance premiums, and will continue to enjoy the hospitalization of the basic medical insurance. The treatment, not to build personal accounts.

If the total number of years of contributions in the unified account combined insurance method is less than 15 years, and the insured person voluntarily makes up the difference between the total number of years of contributions in the unified account combined insurance method and the hospitalization integrated insurance method in a lump sum, so that the total number of years of contributions in the unified account combined insurance method reaches 15 years, the medical insurance agency will build a new individual account for him or her in accordance with the Measures, starting from the month of the supplementary contribution, and the individual account of the year of the supplementary contribution will not be rewritten. The individual account of the year of retroactive contribution will not be credited.

Expanded information:

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The relevant requirements of the basic medical insurance for urban workers stipulate that:

1. Employees of the units participating in the basic medical insurance, due to the unit's corporate transformation, shareholding transformation, sale, auction and other reasons for the change of the work unit, should continue to participate in the basic medical insurance and pay the basic medical insurance premiums in full and on time.

2, reached the legal retirement age for retirement procedures, according to the provisions of the basic medical insurance premiums are no longer paid by the personnel, the basic pension insurance premiums higher than 300% of the average monthly salary of Chengdu workers in the previous year, the individual account by the transfer of 300% of the average monthly salary of Chengdu workers in the previous year as the base of the individual account.

3, the employer owes the basic medical insurance premiums, the unit participants suspend the enjoyment of medical insurance benefits, in accordance with the "Provisional Regulations on the Collection and Payment of Social Insurance Premiums" to make up for the payment of medical insurance premiums, interest and late payment, and then make up for the individual account and the number of years of contributions. Medical expenses incurred by employees hospitalized during the period of arrears shall be reimbursed in accordance with the standards and scope of payment of the integrated fund as stipulated in the medical insurance policy at the time of admission to the hospital.

Chengdu Municipal Institutions Open Network-Chengdu Municipal Urban Employees' Basic Medical Insurance Measures Implementation Rules