A contractor's insurance program usually combines general liability, workers compensation, commercial auto, tools and equipment, and often umbrella, builders risk, and bonds. The right stack depends on your trade and contracts, and the details, completed operations, class codes, endorsements, and exclusions, matter as much as the policies themselves.
The core coverages
Most contractors build on five pieces. General liability covers third-party injury and property damage and the completed-operations exposure from finished work. Workers compensation covers employee injury and is priced by class code and payroll. Commercial auto covers vehicles, including the hired and non-owned exposure crews create. Tools and equipment covers the gear that travels. And an umbrella raises limits to what contracts require. Trade-specific coverages, builders risk, installation floaters, pollution, and E and O, layer on from there.
Where contractors get caught
The recurring problems are predictable: completed-operations coverage that is missing or too low, additional insured and per-project aggregate wording a contract required but the policy never carried, class codes that misstate the work and blow up the workers comp audit, uninsured subcontractors charged back to the hiring contractor, tools left uncovered off premises, and trade exclusions, residential, height, hot work, that quietly void the core operation. Each is avoidable with a review.
Matching coverage to the trade
No two trades carry the same risk. A roofer's exclusions, a plumber's water exposure, an excavator's pollution, a solar installer's professional liability, each shapes the program. The architecture of a good contractor policy is built from the actual operation, the contracts, and the class codes, not a generic template. That is the difference between a certificate that looks complete and a program that pays.
How to use this guide
Start with your trade page and your core coverages, then check your contracts against your endorsements, your class codes against your work, and your tools and equipment against what you actually carry. When a job, a renewal, or a contract is on the line, a coverage review is the fastest way to confirm it all lines up.
