Trustmark | 18,661 followers on LinkedIn. Trustmark is a national employee benefits company offering specialized expertise in voluntary benefits, self-funded health benefit plan design and administration, and employee health and fitness programs that drive results through human and virtual connection. Trustmark offers employers access to benefit options usually reserved for large companies, combined with the personal service you’d expect from a small company. Trustmark’s commitment to building long-term, trusted relationships helps people and businesses thrive