26 CFR 31.3306(i)-1 - Who are employees.
(a) Every individual is an employee if the relationship between him and the person for whom he performs services is the legal relationship of employer and employee. (The word “employer” as used in this section only, notwithstanding the provisions of § 31.3306(a)-1, includes a person who employs one or more employees.)
(b) Generally such relationship exists when the person for whom services are performed has the right to control and direct the individual who performs the services, not only as to the result to be accomplished by the work but also as to the details and means by which that result is accomplished. That is, an employee is subject to the will and control of the employer not only as to what shall be done but how it shall be done. In this connection, it is not necessary that the employer actually direct or control the manner in which the services are performed; it is sufficient if he has the right to do so. The right to discharge is also an important factor indicating that the person possessing that right is an employer. Other factors characteristic of an employer, but not necessarily present in every case, are the furnishing of tools and the furnishing of a place to work, to the individual who performs the services. In general, if an individual is subject to the control or direction of another merely as to the result to be accomplished by the work and not as to the means and methods for accomplishing the result, he is an independent contractor. An individual performing services as an independent contractor is not as to such services an employee. Individuals such as physicians, lawyers, dentists, veterinarians, construction contractors, public stenographers, and auctioneers, engaged in the pursuit of an independent trade, business, or profession, in which they offer their services to the public, are independent contractors and not employees.
(d) If the relationship of employer and employee exists, the designation or description of the relationship by the parties as anything other than that of employer and employee is immaterial. Thus, if such relationship exists, it is of no consequence that the employee is designated as a partner, coadventurer, agent, independent contractor, or the like.
(e) All classes or grades of employees are included within the relationship of employer and employee. Thus, superintendents, managers, and other supervisory personnel are employees. Generally, an officer of a corporation is an employee of the corporation. However, an officer of a corporation who as such does not perform any services or performs only minor services and who neither receives nor is entitled to receive, directly or indirectly, any remuneration is considered not to be an employee of the corporation. A director of a corporation in his capacity as such is not an employee of the corporation.