This study addressed the topic of legislative coercion in contracting and its impact on the autonomy of the will. The thesis presented the concept of mandatory contracts and their effect on the element of consent, providing practical applications of these contracts. The research highlighted the problem of the absence of a legislative basis for legislative coercion in contracting, with no governing texts. Instead, legislators enact contracts and compel parties or a party to enter into them, raising questions about the criteria of these regulations, their justifications, and the extent of protection they afford to the autonomy of the will. The study began in its first chapter by presenting the concept of mandatory contracts and their aspects. It then analyzed the impact of these contracts on the element of consent and the autonomy of the contracting parties' will. Following this, it distinguished these contracts from similar ones. Subsequently, the study moved on to two practical applications of mandatory contracts in its second chapter, examining the consequences of these contracts. The researcher adopted an analytical approach in this study based on the principles of Omani legislation.