This article on the usefulness of a general codification of administrative law forms the closing contribution of a NALL-special. In this special, various authors have reflected on the successfulness of a broad codification process in 1998, which introduced rules on the notification of decisions, policy rules, subsidies, enforcement and supervision of administrative authorities in the Dutch General Administrative Law Act (GALA). The editors asked the contributors whether the objectives of the rules introduced were met and how the rules turned out to function in practice. In this overarching article, the NALL-editors reflect on the general lessons to be learned for the GALA-legislator. In these lessons they also take into consideration the initiatives for a law of administrative procedure of the European Union.

In judicial review of decisions of administrative authorities courts generally aim towards grounding a judgment on substantively true facts. Such a substantive truth is usually understood as meaning ’that which happened’. But how can true facts be established if the facts have not yet occurred and what implications does this have for judicial review in administrative procedures? In this article this question will be analysed by taking the Dutch Administrative Court’s review of merger decisions of the Dutch Competition Authority - using a substantively close copy of the European merger control assessment framework - as subject of analysis. Judicial review of the substantive assessment in merger control, including the prospective analysis involved and taking into account complexities of economic evidence, will be analyzed and set against the general aim of establishing substantive truth of facts.

The codification of policy rules is based on the assumption that public authorities will adopt their policy in policy rules and that judges will use these policy rules when assessing individual decisions. However, codification might have side effects, like the existence of rules that do not meet the criteria of policy rules. This article examines the extent to which the objectives of the legislator have been achieved. It is concluded that public bodies indeed adopt policy rules more and more, but that these rules do not always meet the standards. Administrative courts appear to use rules when assessing decisions, but do not seem to follow the scheme as laid down in the GALA. The codification resulted in a complexity of rules, but this complexity does not hamper judicial review. After all: the judicial review is centered on the individual decision, not so much on the nature of the applied rule.

This article examines the subsidy rules as they have developed since the introduction of the subsidy title into the General Administrative Law Act (GALA) fifteen years ago. What did experts at that time consider to be the most important parts of the subsidy title and what were their expectations in that regard? We will consider, for certain selected topics, which main developments have taken place in legal practice over the past fifteen years, based mainly on an analysis of the case law. The most important features and trends will be outlined in this article. Finally, we will consider whether these features and trends can teach us anything about (the development of) the GALA that may still be relevant for the legislator today, when designing general rules of administrative law.