 In 1938, Sánchez-Navarro became a manager at Cervecería Central which then belonged to Cervecería Cuauhtémoc.In 1939 he co-founded the National Action Party (PAN) with Manuel Gómez Morín and Efraín González Luna.In 1942 he was offered a job at then small competitor Cervecería Modelo (now makers of Corona, Pacifico, Victoria amongst others) by the company's founder Pablo Diez, after what was a fair but staunch negotiation with Don Pablo over beer concession rights at a bullfighting arena.