This document discusses power and influence in organizations. It defines power as the capacity to influence others and explores how power is derived from sources like legitimate authority, control over rewards and punishments, expertise, and personal charisma. Power is greatest when a person controls a critical and non-substitutable resource and is central to many interdependent relationships. Influence tactics range from assertive commands to more subtle strategies like coalition building, information control, appeals to higher authority, and persuasion. The effectiveness of influence depends on factors like the message, audience, and whether it motivates commitment versus mere compliance.