Gregory G. Zigulis

Gregory G. Zigulis, MS, MBA, BSCE, CIH, CSP, B11 LMSS™ is an occupational safety and health expert specializing in OSHA compliance and risk assessment. With a career spanning military bioenvironmental engineering, industrial hygiene management, and environmental health and safety consulting, he brings a multidisciplinary perspective to litigation work. His work centers on investigating serious and fatal injury incidents, assessing compliance with OSHA standards, and evaluating whether safety management systems meet regulatory requirements.

Mr. Zigulis has been retained in numerous expert witness and consulting engagements across the United States, involving construction safety programs, multi-employer worksites, and industrial hygiene cases. His Master of Science in Occupational Safety Management, along with certifications such as Certified Safety Professional and Certified Industrial Hygienist, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving toxic exposures, workplace falls, and equipment-machine accidents.