In October 1945, in order to constitute a working legal system, and given that 90% of German lawyers had been members of the Nazi Party, the British decided that 50% of the German Legal Civil Service could be staffed by "nominal" Nazis. Similar pressures caused them to relax the restriction even further in April 1946. In industry, especially in the economically crucial Ruhr area, the British began by being lenient about who owned or operated businesses, turning stricter by autumn of 1945. To reduce the power of industrialists, the British expanded the role of trade unions, giving them some decision-making powers.