Identify the actual working relationships
Document who hires, pays, directs and supervises the workers, who supplies equipment and where the work occurs. Explain labor-only arrangements separately from a subcontractor delivering an independent scope. Borrowed-employee and statutory employer questions can arise under applicable law and should be evaluated by counsel. A contract's independent-contractor label or an invoice does not conclusively determine the employment relationship. The practical site arrangement matters as well as the written agreement.
Review evidence beyond a certificate
Obtain the relevant insurance evidence before mobilization and compare it with the work assigned. State compensation, Longshore and maritime employers liability are different subjects. Ask for appropriate policy or endorsement confirmation where a certificate cannot establish the required protection. Review insured entities, covered operations, policy dates and territorial scope. Contractor obligations under the Longshore Act can be affected by a subcontractor's failure to secure compensation; do not assume that outsourcing labor eliminates every responsibility.
Align contracts and incident procedures
Have counsel review indemnities, defense obligations, waivers and additional insured requirements for the relevant jurisdiction and maritime context. Coordinate those provisions with the insurance actually available. Establish how injuries are reported among the employer, contractor, vessel operator and insurers without delaying care. Maintain current contact information and document changes in labor providers. The objective is a workable allocation of responsibility supported by evidence, rather than a file containing certificates that no one has compared with the project.
Questions worth asking
Does a subcontractor's certificate guarantee the hiring contractor has no liability?
No. It neither changes the law nor establishes all policy terms. The work, agreement and actual insurance must be reviewed.
Should labor suppliers disclose vessel assignments?
Yes. Vessel duties and control relationships are material facts for reviewing potential maritime employee exposures.
Official references
Sources support the related legal or safety topic. Policy review points are general educational guidance.
U.S. Department of Labor: Longshore insurance responsibilities ↗33 U.S.C. § 904: contractor and subcontractor obligations ↗