AmTrust Financial Services, Inc., a global specialty property and casualty insurer, Wednesday released the AmTrust 2021 Contractor Risk Report, identifying common injuries and the resulting time off work for the specialized group. The report, based on 26,000 workers’ compensation claims over 10 years, found that companies in business less than four years make up 75 percent of claims paid out. The report also determined that new employees pose the greatest injury risk and that workers’ compensation claims peak in the summer.