The Legal Obligations of Employers for Delegations and Secondments in the EU

Employers sending staff on business trips or longer assignments across EU member states face a legal framework that is easy to misjudge. Getting the distinction between a delegation and a secondment wrong, or missing the obligations tied to each, can lead to significant financial penalties and legal complications for both the sending company and the host company within EU territory.

The legal framework

Transnational delegations and secondments in the EU are governed by several overlapping pieces of legislation:

• Directive 96/71/EC on the posting of workers in the framework of the provision of services
• Regulation 883/2004 on the coordination of social security systems
• Law 16/2017 on the posting of employees in the context of transnational service provision, in Romania's national implementation

Delegation versus secondment

A key first step for employers is understanding the distinction between delegation and secondment, as well as how secondment is treated under labor law more broadly:

• Delegation typically refers to short business trips where an employee travels to another location, often another EU member state, to carry out temporary work-related tasks on behalf of their employer
• Domestic secondment involves an employee being assigned to work for a period at a different location or entity within the same country, under specific labor law obligations
• Transnational secondment involves posting an employee to work in another EU member state on behalf of their employer, which triggers the full set of obligations under the Posting of Workers Directive

Obligations that differ by category

Each category carries its own legal obligations, and treating them interchangeably is one of the more common compliance mistakes employers make:

• For delegations, obligations generally center on travel documentation, expense arrangements, and ensuring the trip does not inadvertently meet the threshold for a secondment
• For domestic secondments, employers need to observe national labor law requirements governing the terms of the assignment
• For transnational secondments, employers must meet host-country notification requirements, ensure compliance with local minimum employment conditions, and secure the appropriate social security documentation, including the A1 certificate confirming continued coverage under the home country's system

Why this matters

A lack of clarity about these obligations, or simply overlooking them, can expose both the sending and host companies to financial penalties and legal risk. Understanding the European legal framework, staying current on legislative changes, and applying consistent internal processes for classifying business travel are the best ways for employers to stay ahead of these requirements.

Nestlers Group works with employers across Romania and the EU to build compliant, well-documented processes for delegations and secondments, helping avoid the penalties that come with misclassification.

Sources: Directive 96/71/EC, Regulation 883/2004, Law 16/2017