Why is tower contractor insurance more expensive than general construction insurance?

Tower contractor insurance carries higher premiums than general construction for several compounding reasons. First, severity: when incidents occur at 200-1,000 feet, they are almost always fatal or catastrophically injurious. There are very few minor claims in tower work. The average claim severity for tower climber WC is multiples higher than ground-based construction. Second, the limited market: only a handful of E&S carriers write tower risks, reducing competition and allowing higher pricing. Standard markets exclude the risk entirely. Third, class code rating: NCCI codes 3724 and 7601 carry base rates reflecting the historical loss experience of structural steel and antenna work at height. Fourth, MSA-driven coverage breadth: tower contractors must carry broader coverage (no height exclusions, action-over, blanket AI, per-project aggregate) than most general contractors, and broader coverage costs more. Fifth, fleet exposure: tower contractors operate heavy vehicles with crane and boom equipment, driving commercial auto costs higher. Sixth, regulatory scrutiny: OSHA's emphasis program on communication towers creates higher citation frequency, which correlates with carrier loss experience. The combination of these factors means tower contractors should expect insurance costs of 8-15% of revenue versus 2-5% for typical general contractors.