Cross border workers are people who live in a country and work in another, and they might as well be expats. When you live near a border, you might have to travel and work in another country for various reasons (better career opportunities, more attractive working environment and wages, etc.). In Europe, hundreds of thousands of people cross borders every day to work in France, Switzerland, Luxembourg, Belgium, Switzerland, Italy or Spain. While it is a well-established system, it wasn't spared by the Covid pandemic.