The Globe and Mail reports in its Saturday edition that in 1976, Chris Espinosa rode his moped a mile-and-a-half every Wednesday afternoon, parked it and went to work. A New York Times dispatch to The Globe says that at just 14 years old, his employer, Apple Computer, had customers who wanted to try its earliest computer, and Mr. Espinosa was responsible for demonstrating it. Mr. Espinosa's job has changed many times in the 50 years since, but he still works for Apple. Mr. Espinosa, 64, is one among an increasingly rare breed in today's economy: people who have spent all of their lives working for one company. It is even harder to find somebody like him in Silicon Valley, where companies start up and shut down overnight and software engineers, product managers and others switch jobs every couple of years. On Wednesday, Apple turned 50. Few have witnessed its transformation as closely as Mr. Espinosa, its longest-tenured employee. When Steve Jobs and Steve Wozniak signed the documents to start Apple in 1976, Mr. Espinosa became employee No. 8 at the scrappy start-up that assembled computers by hand in Mr. Jobs's childhood home. Mr. Espinosa now works on the operating system for Apple TV, the company's streaming device.