Over here in the Netherlands there is a law that makes it compulsory for the employer to agree to this kind of request, unless they can prove it is impossible t

Over here in the Netherlands there is a law that makes it compulsory for the employer to agree to this kind of request, unless they can prove it is impossible to keep the business going otherwise (ie, "but we'd have to hire more people" is not a valid reason). There are a few minor restrictions like having had a permanent contract for at least six (I think) months, but otherwise any employee can request this.