Under the agreement, a detached worker remains subject only to the social security
            taxation and coverage laws of the country from which the employer transferred him
            or her. However, the worker must meet all the following conditions:
         
         
            - 
               
                  • 
                     The employer/worker expects the period of work in the host country to last no more
                        than 5 years. The 5-year period begins with the date the work in the host country
                        begins or October 1, 2018 (effective date of the agreement) whichever is later;
                      
 
 
- 
               
                  • 
                     The employment relationship existed before the employer transferred the worker from
                        the home country; and
                      
 
 
- 
               
                  • 
                     If an American employer sends an employee to the company's affiliate in Brazil, the
                        American employer must enter into an agreement with the Internal Revenue Service (IRS)
                        under section 3121(l) of the IRS Code. The 3121(l) agreement provides, among other
                        things, for Social Security coverage for U.S. citizens and residents employed by the
                        affiliate. In such cases, the employer must still obtain a certificate of coverage
                        to establish the exemption from Brazilian social security taxes.