In simple words, if someone works for an organization without being hired as their employee, then that person is called a contingent worker.
Certain recruitment and staffing agencies provide contingent workforce staffing solutions to diversify the array of services.

Emphasystem LLC practices hiring temporary and freelance workers to match the need for specific roles within an organization. These employees are not considered permanent; instead, they work for a certain period of time in an organization with consent. The employment period varies depending on the projects and other objectives.