To find the worker is a volunteer, independent contractor or employee is very essential.

A person must know that the worker is a volunteer of the non for profit organization or independent contractor or  employee and there may be a chance that this status will affect the tax work dealing between the organization and individual.A  Person should also have to consider always the circumstances and the facts of every individual while finding whether the worker are an employee, volunteer or independent contractor.
Who is Employee: Employees who are working in time basis for their payment and they can receive paid leave such annual, recreation and sick leave. 
Who is an independent contractor:  This type contractor gets payment when they achieved their results and will provide necessary equipments and materials to finish the work
Who is volunteer: Volunteer is someone enters into any types of service as they wish and a true volunteer won’t work under any contract basis.