A central theme of this book is that moral expectation should not be confused with moral obligation. While we are morally expected to do everything we are obligated to do, a person can be morally expected to do some things that he or she is not morally obligated to do.

Although moral expectation is a familiar notion, it has not been the object of investigation in its own right. In the early chapters Mellema attempts to provide a philosophical account of this familiar notion, distinguish it from other types of expectations, and show how it is possible to form false moral expectations. Subsequent chapters explore the role of moral expectation in agreements between people, analyze ways that people avoid moral expectation, illustrate how groups can have moral expectations, and view moral expectation in the context of our relationship with divine beings. The final chapter provides insight into how moral expectation operates in people’s professional lives.