What is the Matrix? Well, it's not a bunch of hooey about What is real, that's for sure. Matrix Absence Management offers customized service to deal with workers' compensation, disability, and family leave programs. The company's family medical leave administration, personal leave administration, and human resources support services help companies of all sizes save money when managing prolonged employee absence. With about 15 offices across the US, Matrix is able to serve medium- to large-sized companies like clients Amgen, Honeywell, and National Semiconductor. It is a subsidiary of insurance provider Delphi Financial Group, itself a part of Tokio Marine Group (Japan's oldest property/casualty insurance firm).