It is not always clear whether a person is an employee. Numerous methods have been developed for examining the nature of the relationship. Describe the various methods which have been established and the relative usefulness of each. Include in your answer an explanation of why the determination is relevant.

Employment tests:
a. Control test:
- useful for simple relationships
- not conclusive as employment relationships become more varied and complex
b. Fourfold test:
- may not be conclusive in some situations where independent contractors assume a role that resembles employment by taking direction from and using the facilities of the other party
c. Organization test:
- usually most useful to identify independent contractors in the context of the employer's usual business
d. Relevance:
- to determine existence of vicarious liability
- to distinguish employees from agents and independent contractors and the various rights and duties of parties under these relationships