What refers to maintenance tasks performed by outside laborers for a fee?

The term "contract services" is appropriately used to describe maintenance tasks that are performed by outside laborers for a fee. This designation highlights the professional nature of the work, where businesses or property managers hire specialized companies or individuals to perform specific maintenance duties.

Contract services are often utilized in property management for various tasks such as landscaping, plumbing, electrical work, and waste management. By engaging contractors, property managers can ensure that the work is done professionally and often benefit from the contractor's expertise and efficiency.

In contrast, casual labor typically refers to informal, often short-term jobs that do not require the same level of professional engagement. Internal service contracts involve services provided within an organization rather than being outsourced. Freelance maintenance might imply more sporadic and informal arrangements, lacking the structured relationship typically associated with contract services. Thus, "contract services" best captures the professional and fee-based arrangement characteristic of maintenance tasks handled by outside laborers.