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Social security agreements in Uruguay: totalization, postings and which countries are covered

Argentina. For full detail on Argentina, go to The Argentine Thread.

Last verified: 2026-10-27 · Status: Stable

Uruguay coordinates pensions with other countries through the Mercosur Multilateral Agreement (Argentina, Brazil, Paraguay), the Multilateral Ibero American Convention applied by 13 states including Spain, and bilateral agreements with 21 countries or provinces including the United States, Canada, Germany, France, Italy and Quebec. These agreements let workers add periods of service in both countries to qualify for a pension, and under the Mercosur agreement a professional, technical or managerial worker posted for a limited time stays under the home system for up to 12 months, extendable only with the host authority's consent. Agreements with Russia, Finland, the Czech Republic and Australia were not in force according to the BPS report on data to December 2025.

USD figures use UYU 40.214 per US dollar, the BCU quotation for DLS. USA BILLETE on 26 October 2026, retrieved from the BCU quotations service on 27 October 2026; conversions are for orientation only.

Key facts

Bilateral social security agreements listed as in force by the BPS	21 agreementsBPS Comentarios de Seguridad Social Nº 135, as of 2026-10-27 · in force
States applying the Multilateral Ibero American Convention	13 statesLey Nº 18.560, as of 2026-10-27 · in force
Mercosur posting period under home legislation	12 monthsLey Nº 17.207, agreement art. 5, as of 2026-10-27 · in force
Mercosur Multilateral Social Security Agreement in force	2005-06-01 dateLey Nº 17.207, as of 2026-10-27 · in force

The rule

1. The BPS lists as in force: ILO Convention 102; the Ibero American Social Security Convention (Ley 14.803, in force July 1978, applied through bilateral agreements); the Multilateral Ibero American Social Security Convention, approved by Ley 18.560, ratified 24 May 2011 and in force from 1 October 2011, applied by Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, El Salvador, Spain, Paraguay, Peru, Portugal, Dominican Republic and Uruguay; the Mercosur Multilateral Agreement (Ley 17.207, in force 1 June 2005) for Argentina, Brazil, Paraguay and Uruguay; and bilateral agreements with Germany, Austria, Belgium, Canada, Chile, Colombia, South Korea, Costa Rica, the United States, France, Greece, the Netherlands, Israel, Italy, Luxembourg, Peru, Portugal, Quebec, Romania, Switzerland and Venezuela. Agreements with Russia, Finland, the Czech Republic and Australia were described as not yet in force.BPS, Asesoría General en Seguridad Social, Comentarios de Seguridad Social Nº 135 (data to December 2025), List of agreements, pages 7 and 8, 2026-05 official text · verified 2026-10-27

2. Under the Mercosur agreement workers are subject to the legislation of the State where they work and receive the same rights and obligations as nationals for the benefits covered, including workers of other nationalities resident in a Mercosur state.Acuerdo Multilateral de Seguridad Social del Mercosur, approved by Ley Nº 17.207, Agreement art. 2, 3 and 4, 1999-09-24 official text · verified 2026-10-27

3. Exception for postings: a worker of a company based in one Mercosur state who performs professional, research, scientific, technical, management or similar tasks and is transferred to another state for a limited period stays under the home state's legislation for up to 12 months, which may be extended exceptionally only with the prior express consent of the host state's competent authority. Air crews and land transport transit staff stay under the law of the company's seat, and ship crews under the flag state.
Example: An engineer of a Brazilian company posted to Montevideo for nine months keeps paying into the Brazilian system under the posting certificate and is not enrolled in the BPS for that period.Acuerdo Multilateral de Seguridad Social del Mercosur, approved by Ley Nº 17.207, Agreement art. 5, 1999-09-24 official text · verified 2026-10-27

4. The Multilateral Ibero American Convention was approved in Uruguay by Ley 18.560.Ley Nº 18.560, Art. 1, 2009-09-11 official text · verified 2026-10-27

Instrument	Countries	Norm
Mercosur Multilateral Agreement	Argentina, Brazil, Paraguay	Ley 17.207
Multilateral Ibero American Convention	Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, El Salvador, Spain, Paraguay, Peru, Portugal, Dominican Republic	Ley 18.560
Bilateral agreements	Germany, Austria, Belgium, Canada, Chile, Colombia, South Korea, Costa Rica, United States, France, Greece, Netherlands, Israel, Italy, Luxembourg, Peru, Portugal, Quebec, Romania, Switzerland, Venezuela	Each agreement's approving law
Signed or in process, not in force	Russia, Finland, Czech Republic, Australia	BPS report Nº 135

Social security coordination instruments in force for Uruguay (BPS, data to December 2025)

Worked example

A manager of an Argentine company is posted to the Uruguayan subsidiary for ten months: under Mercosur agreement art. 5 the manager stays under the Argentine system for the posting and the Uruguayan entity does not enroll the manager with the BPS for pensions; a longer stay needs the Uruguayan authority's prior consent, otherwise Uruguayan contributions apply. For the Argentine side see The Argentine Thread guide.
A Spanish national who worked 20 years in Spain and 12 in Uruguay can add both periods to qualify for a pension under the Ibero American framework, each country paying its share.

Step by step

1. Check whether the home country appears in the BPS list of agreements in force.
2. For postings, request the certificate of coverage from the home institution before the transfer starts.
3. Diary the end of the posting period (12 months under Mercosur) and request any extension in advance.
4. If no agreement applies, enroll the worker with the BPS from the first day of work in Uruguay.
5. Keep records of service periods to support future totalization claims.

Common traps

Australia and Finland agreements had been signed but were reported as not in force at December 2025; do not rely on them yet.
The Mercosur posting exception covers professional, technical, research and management roles, not every worker.
Totalization helps qualify for a pension but each country pays only its own share.
Tax and social security are separate: a posting certificate does not change personal income tax residence.

Sources

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