No, the 90-day Schengen rule does not apply to Irish citizens. As citizens of a European Union member state, Irish nationals benefit from the "Freedom of Movement" within the EU and the wider European Economic Area (EEA). This means that Irish citizens can travel to, live in, and work in any Schengen Area country (such as France, Germany, or Spain) for more than 90 days without needing a visa or a residency permit. While they are still subject to some administrative requirements—such as registering with local authorities if they stay for longer than three months—they are not restricted by the "90 days within a 180-day period" limitation that applies to "third-country" nationals like Americans, Britons, or Australians. It is important to note that while Ireland is not a member of the Schengen Agreement (meaning there are still passport checks when flying between Dublin and Paris), Irish citizens still possess full EU treaty rights. This distinction often causes confusion for those from outside Europe, but for an Irish passport holder, the entire European Union remains an open landscape for long-term residency and employment without the threat of "overstaying" a tourist window.