Zenith Insurance Company (United States) | 12,137 followers on LinkedIn. Zenith is the premier specialist in workers’ compensation nationally, and a leader in property and casualty insurance | Zenith is the premier specialist in workers’ compensation nationally, and a leader in property and casualty insurance for the California agriculture industry. We combine depth of expertise with a forward-thinking approach to achieve the highest level of service and outcomes for our clients. Visit TheZenith.com to learn more.