• A Contractor Limitation Supplement is an approval, usually attached to the umbrella policy of contractors and construction-related organizations, that establishes limitations or exceptions to umbrella coverage for one or more of the following: explosion, collapse, and underground (XCU) hazard; care, guardianship or control (CCC); contractual liability; damage to labor (broad form of damage to property (PD)); professional responsibility; joint ventures; and twists. Some approvals are in effect to make umbrella coverage the next form of cover provided for these risks in the main policy. However, other versions of the endorsement impose more restrictive conditions or even absolute exceptions. It is desirable to confirm that the following form coverage is provided for explosions, collapses, underground work, wide form partial discharge and contractual liability coverage as provided in the base layer.