As used in this article, unless the context indicates otherwise:
(a) "Employer" means every person engaged in any business or enterprise in this State, which has one or more persons in service under any appointment, contract of hire, or apprenticeship, express or implied, oral or written, irrespective of whether such person is the owner of the business or is operating on a concessionaire or other basis.
(b) "Employee" means every person including aliens and minors, rendering actual service in any business for an employer, whether gratuitously or for wages or pay and whether such wages or pay are measured by the standard of time, piece, task, commission, or other method of calculation and whether such service is rendered on a commission, concessionaire, or other basis.
(c) "Employing" includes hiring, or in any way contracting for the services of an employee.
(d) "Agent" means every person other than the employer having the authority to hire or discharge any employee or supervise, direct, or control the acts of employees.
(e) "Gratuity" includes any tip, gratuity, money, or part thereof, which has been paid or given to or left for an employee by a patron of a business over and above the actual amount due such business for services rendered or for goods, food, drink, or articles sold or served to such patron.
(f) "Business" means any business establishment, or enterprise, regardless of where conducted.
(Stats. 1937, Ch. 90, Sec. 350.)