Pierre Chatagny was originally looking for a position on the film's crew, when director Lionel Baier asked him to read for the part of Loïc.
Lead actor Pierre Chatagny actually works for a chocolate factory in the Swiss city of Bulle, according to one of the special features on the DVD.
In the sequence when Loïc catches the train back to Bulle to head to work at the factory, he scans his ID at the factory. If you slow down the play and advance a frame at a time, you'll see that this is Pierre Chatagny's actual work ID.