The corporation is the "master", the employee is the "servant". Because the corporation owns the means of production without which the employee could not make a living, the employee needs the corporation more than vice versa.
Peter F. Drucker (2014). “The Peter Drucker Collection on Managing in Turbulent Times: Management: Revised Edition, Management Challenges for the 21st Century, Managing in Turbulent Times, and The Practice of Management”, p.65, Harper Collins