Regulation 883 Is Changing: Five Posting Rules Romanian Employers Must Prepare For Now

On 28 September 2026, the Council of the EU gave its final green light to the revised rules coordinating national social security systems, amending Regulation (EC) No 883/2004 and its implementing Regulation (EC) No 987/2009. For companies that send employees to other Member States, several of the rules they rely on every week will look significantly different.

The headline for employers is timing. The regulation enters into force once it is published in the Official Journal, but the key provisions on postings and applicable legislation only become applicable 24 months later. That gives Romanian employers roughly two years to adapt.

Those two years should not be read as a period in which nothing needs to happen. Recruitment practices, A1 workflows, travel classification and assignment tracking all take time to change, and the employers who start now will be the ones applying the new rules smoothly on day one. Below are the five changes HR, Payroll and Global Mobility teams should already have on their radar.

1. Hiring someone specifically to post them abroad becomes stricter

Where a person is recruited for the purpose of being sent to another Member State, the new rule requires that they were already subject to the social security legislation of the state where the employer is established for at least three months immediately before the employment relationship begins. Under the current framework, the guidance threshold is one month.

It is important to read this correctly. The rule does not mean that every employee needs three months of seniority with the employer before a posting. It targets newly recruited people who are hired in order to be posted straight away. A Romanian company that recruits a worker who was previously insured in another country, or not insured at all, and plans to send them abroad in their first weeks will need to check this condition carefully before the A1 is requested.

In practice, this affects:

• project-based hiring for construction, installation and technical services abroad
• recruitment of non-EU workers who arrive in Romania and are posted soon after
• staffing models built around short, back-to-back contracts for foreign projects

2. The 24-month limit stays, with a mandatory break afterwards

The maximum duration of a posting under Article 12 remains 24 months. What is new is an explicit minimum interruption. Once a person has reached a total of 24 months of activity in the other state under the posting rules, they cannot be covered again by Article 12 for the same state until at least two months have passed since the end of the previous period. Derogations remain possible in specific situations.

For employers with long-running projects, this changes staffing plans. Rotating the same specialist back into the same country immediately after a 24-month posting will no longer work without a break or an agreed exception. Posting periods need to be tracked per employee and per host country, not just per project.

3. Business trips finally get a legal definition

The revised regulation defines a business trip as a temporary, time-limited activity linked to the employer's business interests that does not involve the provision of services or the delivery of goods. It expressly mentions examples such as attending meetings, conferences, seminars, cultural or scientific events and training.

This distinction will matter a great deal in practice. Many Romanian companies label almost every foreign trip as a business trip, or delegatie, regardless of what the employee actually does. Under the new definition, an employee who goes abroad to install equipment, deliver a service to a client or carry out maintenance is not on a business trip, whatever the internal travel form says. That activity is a posting, with the obligations that follow.

4. A simplified procedure for very short activities

For certain very short activities, the prior notification and A1 request obligation will not apply. The exemption covers activities with a total duration of no more than three consecutive working days within a period of 30 consecutive days, subject to conditions set out in the text.

The construction sector is treated separately and does not benefit from this simplification. Employers should also note that the window is narrow. An employee who travels to the same country several times a month will quickly fall outside it, so relying on the exemption requires reliable tracking of working days abroad.

5. Multi-state determinations will expire after 24 months

For people who normally work in two or more Member States, the determination of the applicable legislation under Article 13 will be valid for a maximum of 24 months. After that, the person's situation must be reassessed.

This closes a common gap. Today, many multi-state and hybrid remote arrangements are assessed once and then left unchanged for years, even as work patterns shift. Under the new rules, employers will need a review cycle for every multi-state worker, with current data on where the work is actually performed.

What Romanian employers should review during the transition

The transition period is the right time to rebuild processes rather than wait for the application date. A practical review should cover:

• recruitment of people who will be posted soon after hiring, including their prior social security history
• the A1 and social security assessment workflow, moved to the start of the assignment process
• the internal classification of business trips versus postings, based on the activity performed
• monitoring of the 24-month posting limit and the two-month break per employee and country
• multi-state workers and remote work arrangements, with a reassessment calendar
• the split of responsibilities between HR, Payroll, Tax and Global Mobility

For companies with frequent cross-border mobility, the A1 should not be the last step of the process. Social security compliance has to begin before the employee leaves. The regulation does not only change a few articles; it changes the moment at which companies need to start thinking about compliance.

How Nestlers Group Supports Employers Preparing for the New Posting Rules

Nestlers Group's Payroll and HR Compliance team handles A1 applications for employees posted from Romania and reviews each case against the conditions that the revised rules make central: prior affiliation for newly recruited staff, cumulative posting periods per host country and the classification of short trips. We help employers build a pre-departure assessment step into their assignment process and set up tracking for the 24-month limit, the two-month break and multi-state reassessments.

Our Immigration Advisory team works alongside this for non-EU employees hired in Romania and posted elsewhere in the EU, confirming right-to-work in the host state, preparing posted worker notifications and aligning immigration documents with the social security position. During the transition, we review existing posting, business travel and remote work policies against the new rules so that HR, Payroll and Global Mobility teams are working from the same process before the new provisions apply.

Sources: Council of the EU press release "Social security coordination: Council gives final green light to updated rules", 28 September 2026; Revision of the regulations on the coordination of social security systems, final adopted text PE-CONS 29/2026; Regulation (EC) No 883/2004 and Regulation (EC) No 987/2009; European Parliament first-reading adoption, 7 July 2026; Remote Work Europe, "EU social security coordination overhaul moves to final approval", 23 September 2026