When we talk about harmonisation, we may mean quite different things. There is a close, yet often unclear, relationship between minimum harmonisation and mutual recognition on the one hand, and between full harmonisation and the country of origin principle on the other hand. This paper will discuss harmonisation in relation to these other regulatory models with, among others, the Tobacco Products and Services Directives as illustrations. Moreover, many years after Tobbaco Advertising I and II it remains entirely unclear how minimum harmonisation instruments must be designed in order to be lawful. This paper proposes a consistent reading of the case law on what is called legislative minimum harmonisation based on Article 114 TFEU. It is also shown that the Court of Justice of the European Union applies a lenient standard to more stringent national measures under what is called constitutional minimum harmonisation based on competences for social policy and the environment.
