Comment by xaitv

Author made the people he was recording unrecognizable. So even though he focused on specific employees he didn't violate their right to privacy which means it isn't illegal.

https://www.anp.nl/blog/305/privacywetgeving-mag-je-filmen-o... is a decent article(in Dutch) about some of the complexities of Dutch privacy law when it comes to filming people in public spaces.