What relationship does a contractor have with the City when performing airport services?

The relationship between a contractor and the City when performing airport services is defined by a contract or subcontract. This formal agreement outlines the obligations, responsibilities, and expectations of both parties, ensuring that the services provided meet specific standards and regulations set by the City. Contracts are crucial in the airport environment because they provide legal protection and ensure that the services align with safety protocols and operational requirements. Having a contract allows for accountability, performance metrics, and possible repercussions if the terms are not met, thereby fostering a professional relationship between the contractor and the City.

In this context, the other options do not accurately reflect the nature of the contractor's engagement. Independent consultants usually have a more informal arrangement that may not encompass the detailed and regulated services often required at airports. Operating without any formal agreements would lack the necessary legal structure to ensure compliance with local laws and standards. Providing volunteer services would not typically align with the professional expectations and regulatory requirements of airport operations, where paid, contracted services are standard.