A Social Security number (número de seguridad social) is necessary to be able to work or be self-employed in Spain. It is also a requirement for obtaining the health card, which allows you access to public health care. If you’re job hunting, it’s a good idea to have a social security number already assigned, so you don’t have to worry about it once you’re hired. Your social security number becomes an affiliation number when you start working.
You can count on us if you need to register in the Spanish Social Security system, as well as if you need to obtain any document or carry out any procedure before this public administration.