This leads to a vaguely related comment: discrimination of immigrants. Consider this, a job advert requiring the following:
German or French mother tongue; as English will be the project language, good written and oral command of English is required
I opposed this, since it technically excludes applicants such as those from the Italian-speaking area, or many international applicants, such as someone from Denmark. It does matter, because (unfortunately) there are employers who use expressions such as “mother-tongue” to signal that they only want to hire Swiss (i.e. no immigrants). It can lead to qualified candidates not applying: a problem when it comes to matching jobs and job-seekers. Now, this is not the case here, and I suggested highlighting that an excellent command of the languages is required.