Hard to believe, but this is true. According to the website of the FWO (Fonds voor Wetenschappelijk Onderzoek), Flemish researchers are now obliged to deposit their pubications in Open Access reositories at least one year after publication in public "Open Access" databases,
in order to effect greater impact and valorization of their work. Researchers are also advised to deposit their other publications in such an "Open Access" database, together with the research data that resulted in these publications.