EU Reg. 883/2004June 2026 · 5 min read
The EU Regulation 883/2004 limits how many days frontalier workers can work from home before social security routing shifts countries. Here is exactly how the 55-day threshold works and what it means for your company.
Read article →Social SecurityJune 2026 · 4 min read
An A1 certificate certifies which country's social security legislation applies to a worker. For frontaliers in Luxembourg, it becomes mandatory when WFH thresholds are exceeded. This guide explains when you need one and how to obtain it.
Read article →Social SecurityJune 2026 · 6 min read
Luxembourg employs workers from France, Belgium, and Germany under three different bilateral social security frameworks. This article explains how EU Reg. 883/2004 determines which regime applies to each frontalier employee.
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