Underwriting involves evaluating and calculating the risk of insuring individuals by reviewing application and medical information. The underwriter must determine the appropriate coverage, premium, and risk acceptance for the insurance company based on their underwriting guidelines. The underwriter reviews applications, requests medical records, and may interview applicants to assess health, risks, and decide what coverage can be offered. Based on their analysis, the underwriter then sets the premium according to the concluded risk level of the applicant. Underwriting plays a crucial role for insurance companies in determining risk acceptance and profitability.