This paper examines the regulatory frameworks and international treaties that impact the operations of UnitedHealth Group Inc. in Australia. It explores key legislation such as the Environmental Protection (Waste Management) Regulation 2000, the Health Quality and Complaints Commission Act 2006, and the Private Health Facilities Act 1999, highlighting their implications for the company's healthcare services, employee wellness, and tax compliance. The paper also delves into the significance of international agreements like the Reciprocal Health Care Agreements (RHCA), the Clinical Trials framework, and the WHO Framework Convention on Tobacco Control, analyzing their influence on UnitedHealth Group's operations and its commitment to providing quality healthcare in Australia. Finally, the paper discusses the impact of the Paris Agreement on the company's environmental sustainability efforts.