Motivation is the most studied topic in management, and three models dominate the syllabus. Used together, they are genuinely useful; used as slogans, they mislead.
Maslow's Hierarchy of Needs
Maslow (1943) argues we satisfy needs in order — physiological, safety, belonging, esteem, then self-actualisation. The management lesson is simple: you cannot motivate someone with “purpose” if they are worried about job security.
Herzberg's Two-Factor Theory
Herzberg (1959) made a sharper distinction: hygiene factors (pay, conditions, policy) cause dissatisfaction when missing but do not motivate when present; motivators (achievement, recognition, growth) are what actually drive engagement. Fixing the coffee will stop complaints, but only meaningful work drives performance.
McGregor's Theory X and Theory Y
McGregor (1960) described two managerial mindsets: Theory X assumes people dislike work and must be controlled; Theory Y assumes people seek responsibility and self-direction. The mindset you hold becomes self-fulfilling.
Putting them together
Cover the hygiene factors first (Herzberg), meet basic needs (Maslow), then lead with a Theory Y mindset and design work around genuine motivators. For a modern take, see Self-Determination Theory in the Management library.