Employer-Sponsored Insurance (ESI) is a type of health insurance provided by an employer to its employees as part of their benefits package. This insurance helps cover medical expenses, including doctor visits, hospital stays, and prescription medications. Employers often share the cost of premiums with employees, making it more affordable for them. ESI is a common way for individuals to obtain health coverage in many countries, particularly in the United States. It can vary in terms of coverage options, costs, and provider networks, depending on the employer's plan and the insurance company involved.