Blog Layout

AIMA and Social Security Clarify Employment of Foreign Citizens Without NISS Number

7 January 2025

On 27th December 2024, Portugal's Social Security announced an important clarification regarding the employment of foreign citizens residing in Portugal. Companies are explicitly allowed to hire foreign workers even if they do not yet possess a Número de Identificação de Segurança Social (NISS), commonly referred to as a Social Security Number.


This clarification acknowledges the practical challenge faced by foreign residents and employers. 


The employment contract is a prerequisite for assigning a NISS number to a foreign citizen. Therefore, the employment contract doesn't need to include the NISS number in the contract itself.


Once the foreign worker has been assigned a NISS number, the employer must report the employment relationship through the Segurança Social Direta (Direct Social Security) online platform of Portuguese Social Security. This procedure ensures the regularisation of tax obligations, specifically the payment of social security contributions.


This clarification from Portuguese Social Security comes at a critical time, as immigration in Portugal has become a significant focus, particularly within the national job market. The primary objectives of this statement are to promote regularisation, facilitate integration, and ensure fair working conditions for foreign workers. Simultaneously, the Portuguese labour market benefits from having these workers regularised, as their contribution is essential to addressing the country’s workforce demands.


One week later, on 4th January 2025, the AIMA agency reinforced this message with a similar announcement through a post on their LinkedIn page.


AIMA's post emphasised that an employment contract is a mandatory requirement to obtain the NISS number. Without a valid employment contract, it is not possible for a foreign citizen to acquire the NISS number. In essence, securing an employment contract is a crucial step before obtaining the NISS.


Once the NISS is assigned by Social Security, the foreign citizen becomes eligible to fulfil the legal obligations established under Law No. 23/2007 with AIMA IP.


This clarification made by these two public entities represents a significant step towards streamlining the immigration process for individuals seeking employment with Portuguese companies. Additionally, it strengthens the Portuguese business landscape by offering clear legal guidance and promoting the integration of these workers into the Portuguese job market.

The NISS number, or Portuguese Social Security Number, serves as a unique identifier for individuals working in Portugal, including employees and self-employed professionals such as freelancers.


The NISS number is utilised for social security and taxation purposes.


Upon acquiring Portuguese citizenship, the NISS number is automatically assigned as part of the process for obtaining the Citizen Card.



If you require assistance with obtaining your NISS or have other inquiries related to Portuguese Social Security processes, don’t hesitate to reach out to us. We are here to provide expert guidance and support.

by Florbela Lopes 31 March 2025
Florbela Lopes | Lawyer
by Luís Maria Branco and Tomás Melo Ribeiro 28 March 2025
Luís Maria Branco | Lawyer
26 March 2025
In the last year, Portugal implemented several measures to regularise the entry of immigrants into national territory, such as the elimination of expressions of interest . On the other hand, Portuguese companies need a foreign workforce to maintain their productivity, for this reason, a “green lane” will be established to streamline the work visa process for foreign nationals being recruited by Portuguese companies. On the companies’ side, there are obligations that must be fulfilled, such as providing training and ensuring adequate accommodation. The official signing of the Green Lane agreement will take place on 1 April 2025 at the Ministry of Foreign Affairs. Over the years, immigrants have significantly contributed to various sectors of the Portuguese economy , such as agriculture and tourism, bringing with them a diverse range of skills, experiences, and knowledge that enrich the labour market and drive the growth of Portugal. To better understand this “green lane,” we will provide answers in this article:
Here are some insights and practical recommendations to help you through the 2024 tax season.
by António Pratas Nunes 25 March 2025
The income earned in 2024 must be declared between 1 April and 30 June 2025 by submitting the IRS Model 3 declaration.
Outro benefício desse estatuto é o direito a solicitar um Cartão de Cidadão.
by Danielle Avidago 14 March 2025
Na área migratória, a isenção de visto não só para turismo, mas também para atividades culturais, empresariais ou jornalísticas.
Portugal is a growing hotspot for entrepreneurs and businesses aiming to expand into Europe.
by Tomás Melo Ribeiro 6 March 2025
Favourable Corporate Tax Rate: Portugal offers a corporate income tax rate of 20%, which is among the most competitive in the EU.
An injunction helps creditors claim outstanding debts quickly through a legal mechanism.
by Margarida Tempera 27 February 2025
Engaging a lawyer is crucial; your defense's success relies on valid proof, procedural adherence, and meeting deadlines.
Portugal's traditions, charm, and cuisine are so integral that legal citizenship feels only fair.
by Danielle Avidago 26 February 2025
Portuguese citizenship, for some, means reconnecting to their parent or grandparent who spent their entire childhood amazing them with stories of a country.
Electric car owners benefit from no oil changes, fewer wearing parts, and lower maintenance costs.
by Cleuzina Cruz 25 February 2025
Electric cars have garnered significant attention compared to conventional vehicles, owing to their environmental and economic advantages.
Among the amendments, Article 75, paragraph 2 is particularly noteworthy.
21 February 2025
On Friday, 14 February 2025, Law No. 9/2025 came into effect, introducing amendments to Law No. 23/2007 of 4 July.
More posts
Share by: