Teamsters Local 853 is seeking to represent approximately 40 employees who drive buses transporting Facebook employees from San Francisco and Oakland to the social media giant's campus on Silicon Valley. The drivers work for Loop Transportation, not Facebook, but that did not deter the union from writing a letter to Mark Zuckerberg, Chief Executive Officer of Facebook, asking for him to encourage Loop to recognize the union as the bargaining representative for the drivers. According to news reports, the Teamsters letter to Mr. Zuckerberg compared the drivers' situation with that of a feudal relationship, saying, "This is reminiscent of a time when noblemen were driven around in their coaches by their servants ... Frankly, little has changed; except that the noblemen are your employees, and the servants are the bus drivers who carry them back and forth." A primary issue for the drivers seeking union assistance is having to work morning and afternoon "split shifts," with non-work time (presumably unpaid) in between.