This directory serves as the definitive classification system for determining wage and benefit requirements for service employees under federal government contracts. The author, Emanuel Weinstein, compiles standardized job descriptions and skill requirements to ensure compliance with the Service Contract Act. This framework provides a uniform nomenclature for various labor categories, allowing contractors and government agencies to align compensation with established federal standards.

Experts and government contractors utilize this directory as a foundational reference for regulatory compliance and payroll administration. Readers frequently note the technical density of the prose, which is designed for administrative accuracy rather than casual reading.