An obligation's a requirement to take some course of action, whether legal or moral. There're also obligations in other normative contexts, such as obligations of etiquette, social obligations, and possibly in terms of politics, where obligations are requirements which must be fulfilled. These are generally legal obligations, which can incur a penalty for unfulfilment, although certain people are obliged to carry out certain actions for other reasons as well, whether as a tradition or for socia… (More on Obligation)