This chapter introduces the two central concepts of the book. “Work” is commonly discussed in terms of paid employment, and that will be the main focus of the chapters which follow. “Happiness” has received centuries of attention from philosophers, poets, and other commentators. It is here viewed in terms that are primarily psychological, identifying three principal dimensions of people’s experience that need to be examined in organizations and in life as a whole. The framework developed in this first chapter is used throughout the book.