MEXICO CITY, Oct 5 (Reuters) - The Mexican unit of German automaker Volkswagen (VOWG_p.DE) will extend a production stop at one of its segments in a plant at the central state of Puebla that produces the popular Jetta model from Oct. 6 to 15, a labor union document showed on Tuesday. It comes as the industry is facing a worldwide semiconductor shortage after manufacturers shifted production toward laptops, cell phones and video games during the pandemic. Volkswagen in Mexico did not immediately respond to a request for comment. Automakers such as General Motors (GM.N), Volkswagen and Ford have suspended operations several times this year.In early September, the United States and Mexico agreed to create a working group on supply chains of semiconductor manufacturers to promote their proper functioning and reduce the region"s vulnerability to the lack of supplies.