In the EU, non-compliance with statutory or negotiated minimum wages averages 6.93% or 1.3%, depending on the statistics used. The lowest national estimate is 0.01% in Belgium and the highest is 11.59% in Hungary. It mostly affects young workers, those on fixed-term or part-time contracts and those working for small companies. It is more common in services than in manufacturing, and is characterised by shorter working time. Member States monitor, enforce and promote compliance in similar ways, although with some differences. This report identifies hindering and enabling factors.