Experience across the border pays off!
Mobility and flexibility are two important assets in the labour market. By working or studying further away from home, you develop yourself and acquire a number of characteristics that are very popular with employers. You improve your sense of responsibility and social skills.
You expand your network and the languages you learn or refine offer you more opportunities later on. The VDAB and various other organisations have a lot of opportunities in house for those who want to go abroad for an internship, training or job.
Link: https://www.guido.be/JobsStages/ArticleDetail/tabid/175/ArticleId/9021/Default.aspx