Acceptance and use of a system is known as a major measure of success from an information systems (IS) perspective. However, within organizations where most system use is mandatory, intention-to-use or usage by and large does not provide a full picture of how such use came to be or if it is truly representative of how end-users really feel about using the system. This study summarizes the theories and models on technology acceptance in the mandatory environment in the IS literature and identifies the critical research based on broader research perspectives. The paper provides an important insight into IS acceptance in the mandatory environment. Theoretical and practical implications and future research directions are discussed in the paper.