This book considers the phenomenon of soft law employed by domestic public authorities. Lawyers have long understood that public authorities are able to issue certain communications in a way that causes them to be treated like law, even though these are neither legislation nor subordinate legislation. Importantly for soft law as a regulatory tool, people tend to treat soft law as binding even though public authorities know that it is not. It follows that soft law's binding effects do not apply equally between the public authority and those to whom it is directed. Consequently, soft law is...