An employment agency can provide employers with temporary, part-time, or full-time workers, and help employers with recruiting, screening, and other aspects of the hiring process. There are many benefits to using an employment agency that will save employers time and money. The fee charged by an agency varies depending on the service provided. Numerous laws protect the applicant or employee from discrimination, and other laws require an employer to document an employee's legal authorization to work in the United States. Employment agencies can be found in most municipalities.