Social security contributions are mandatory payments made by the self-employed and employees (and their employers) to acquire rights to social benefits. They are not considered taxes in France, while in many Anglo-Saxon countries these contributions correspond to the payroll tax (or to a "pseudo-tax" by simply being added to total government revenue). The distinction between taxes and contributions is justified by the fact that contributions provide for direct benefits, while taxes are part of a solidarity system. There are five social security contributions that correspond to various risks. The traditional contributions are sickness-maternity-insurance-disability-death, old age, widowhood, and accidents at work. In 2004, the new solidarity contribution for autonomy (CSA) has been implemented. It is paid by private and public employers for health insurance.