The exemption from Chinese old-age and unemployment insurance presupposes that the provisions relating to the assignment within the meaning of Article 4 (assignment) or Article 8 (special agreement) of the social security contract are fulfilled. Otherwise, Article 3 of the above-mentioned „territorial principle“ applies, as a result of which a worker is subject to the social security rules of the country in which he carries out his work. If the requirements laid down in the Agreement are established, a certificate of coverage (HRV/D 101 or D/HRV 101) should be requested in order to make the current social security legislation compulsory. This is provided by the country of origin and can be made available for a maximum period of 48 months. If an extended operation is foreseen from the outset or if other conditions of Article 4 (assignment) are not met, a special agreement (Article 8) may be requested – the maximum period is 8 years (5 years + 3 years of extension). The agreement is expected to solve the problem of double payment of social security contributions between the two countries and further promote economic and trade relations as well as staff exchanges. The agreement covers Social Security taxes (including the Medicare portion in the United States). As a result of an addendum beginning on 1 May 1996, it also contains the taxes which finance the health insurance and care programmes of the Federal Republic of Germany. The agreement also covers retirement, disability and social security survivors` benefits. It does not cover U.S. Medicare or Security Supplement (SSI) benefits. If you work as a worker in the United States, you are normally covered by the United States, in accordance with the agreement, and you and your employer only pay Social Security taxes in the United States.

If you work as a worker in Germany, you are usually covered by Germany, and you and your employer only pay social security taxes in Germany. This period can vary considerably depending on the different German pension requirements. For example, for the old-age pension for particularly long-term insured persons, it is 45 years and only 5 years for the normal old-age pension. .