On December 30, 1936, General Motors closed seven factories due to workers' strikes. On December 30, 1936, General Motors closed seven factories due to workers' strikes. On December 30, 1936, General Motors closed seven factories due to workers' strikes. On December 30, 1936, General Motors closed seven factories due to workers' strikes. On December 30, 1934, General Motors closed seven factories due to workers' strikes. On December 30, 1934, General Motors closed the factories for collective negotiations based on the factory. General Motors insisted that such negotiations had to be based on the whole company and could lead to a breakdown in the production of industrial sectors such as steel, glass and batteries. The main issue of the strike was whether workers could, as the American Automobile Workers' Federation proposed, be allowed to negoti