Obtaining the Social Security / Affiliation Number

The Social Security Number identifies citizens in terms of Social Security.

What is the Social Security system?

• All citizens.
• Employers, for all workers who are hired to work for them and do not have a social security number.
• The Provincial Directorates or Administrative Offices of the Social Security Treasury General will assign it when workers or employers fail to meet their obligation.

Form TA1

• National Identity Document
• Foreigner Identification Card or Passport.

At the Administrative Office of the Social Security Treasury General corresponding to the citizen's home address or place of work. If you have a digital certificate you can access the Social Security number Assignment service at the e-Office.

It must be applied for prior to the registration and affiliation application or the application for any benefits or services.

The Social Security Number becomes an Affiliation Number at the time when the citizen begins a labour activity determining inclusion within the Social Security System.

Characteristics of Affiliation:

• This is compulsory for all persons included within the System for purposes of rights and obligations.
• It is a single procedure, valid for all the Schemes within the system.
• It covers the entire life of the person included in the System.
• It is exclusive.

Frequently asked questions