ICW Group offers the highest average salary for Underwriting Assistant jobs, making it an excellent choice for professionals in the field. With an average salary of $68,315, job seekers can expect competitive pay. AIG and Beasley Group also offer strong salaries, with averages of $59,038 and $58,404 respectively, providing promising career opportunities. For those seeking solid compensation, RLI Insurance Company, AmTrust Financial Services, Inc., and The Cincinnati Insurance Companies provide solid options. These companies offer average salaries ranging from $53,181 to $40,216, each with its unique benefits and growth potential.