 The Mayoralty of Quirnbach lasted until administrative restructuring in Rhineland-Palatinate in 1972, when it was finally dissolved, and Rehweiler was grouped into the newly founded "Verbandsgemeinde" of Glan-Münchweiler.Until the early 20th century, Rehweiler's inhabitants earned their living almost exclusively at agriculture, which then began to lose importance, finally usually only being pursued as a secondary occupation.Even before the First World War, many villagers had to earn their livelihoods as workers at stone quarries, Saarland mines and factories.