this type of employee is someone who does work for an organization on a temporary or part-time basis
  Ah, I see! Yes, a contingent worker is an employee who works for an organization on a temporary or part-time basis, often through a staffing agency or consultancy.

Contingent workers can be classified into several categories, including:

1. Temporary workers: These employees are hired for a specific period of time, usually to cover absences, busy periods, or to fill a temporary position.
2. Contract workers: These employees are hired on a contract basis, often for a specific project or period of time.
3. Freelancers: These are self-employed individuals who provide services to clients on a project-by-project basis.
4. Part-time workers: These employees work part-time for an organization, often with a flexible schedule.
5. On-call workers: These employees are available to work on an as-needed basis, often for emergency or short-term assignments.

Contingent workers can provide a range of benefits to organizations, including:

1. Flexibility: Contingent workers can help organizations adapt to changing workloads or absences, without having to commit to a full-time employee.
2. Cost savings: Hiring contingent workers can be more cost-effective than hiring full-time employees, especially for specialized or seasonal work.
3.
 The type of employee you are describing is typically referred to as a "contractor" or "temporary worker." These individuals are typically not considered permanent employees of the organization and may be hired to work on specific projects or during busy periods. They may be paid an hourly rate or a fixed fee for the duration of their contract, and they may not be entitled to the same benefits as full-time, permanent employees. Other terms that may be used to describe this type of employee include "freelancer," "consultant," or "contingent worker."