Okla. Admin. Code § 340:1-11-1.1
The following words and terms when used in this Subchapter, shall have the following meanings unless the context clearly indicates otherwise:
"ADA" means the Americans With Disabilities Act of 1990, per Sections 12101-12117 of Title 42 of the United States Code (42 U.S.C. §§ 12101-12117), (SUPP. V.1994) Public Law 101-336.
"Discrimination" means differential treatment, such as conduct, actions, or decisions, based on race, color, national origin, sex, religion, age, disability, genetic information, or political opinion or affiliation unless authorized by law.
"Essential job functions" means the fundamental job duties of an individual position. The term does not include marginal functions of the position. Evidence of the essential job functions are:
"Harassment" means unwelcome or offensive behavior based on membership in a protected class that is so severe or pervasive in nature that it alters the conditions of the victim's working environment.
"Protected Activity" means:
"Protected Class" means a group of people or an identifying characteristic of people prohibited by law from being used as a basis or motivation for employment actions or program or service delivery or eligibility. Protected classes include race, color, national origin, religion, sex, age, disability, political opinion or affiliation, and genetic information.
Okla. Admin. Code § 340:1-11-1.1