Brunegg remained a farming village with a little grain and viticulture on the mountain slopes until the 20th Century. In 1950, 24% of the workers were in the agricultural sector. In 1990 that number was 5%, with 28% working in manufacturing and 67% in the services sector. The A1 motorway, which opened in 1970, touches south-east corner of the municipality. One road from the Mägenwil exit runs straight through the municipality. This easy access to the motorway, led to the establishment of several traffic-logistics businesses. Since 1990, the number of open jobs slightly exceeds the number of inhabitants.