The corporations of Tokyo have their own odd twists. To be a member of a Tokyo corporation involves far more than just working there. In some ways it’s like joining a new family, or another country. Even for the rank and file workers, the corporation will help you find (or outright buy) a house, a car, etc, and expects a high level of loyalty from it’s workers. It is not uncommon for workers to identify with their corporation first, and their nationality or city second.
From the Runners Guide to Tokyo:
The corporations of Tokyo hire runners as often as in any other City. Very concerned with the public perception, and saving face, they usually demand a high level of subtlety and ‘operational tact’ from the teams they hire.