Okla. Admin. Code § 335:15-1-6
(b) In a discharge or discipline complaint as with any complaint arising under Title 25 of the Oklahoma Statutes, the Complainant must establish a prima facie case of discrimination. ["McDonnell Douglass Corp. v. Green", 411 U.S. 792, 5 EPD para 8607 (1973); "Furnco Construction Corp. v. Waters", 438 U.S. 567, 17 EPD para 8401 (1978); "Board of Trustees of Keene State College v. Sweeney", 439 U.S. 24, 18 EPD para 8673 (1978); "Texas Department of Community Affairs v. Burdine", 101 S. Ct. 1089, 25 EPD para 31,544 (1981)]. This means that (s)he must submit evidence which is sufficient to establish that his/her allegations are true if Respondent does not submit evidence to the contrary. The Respondent must then be given the opportunity to rebut Complainant's prima facie case. This can be done in a number of ways, which are discussed below. Complainant is then given the opportunity to provide evidence that Respondent's explanations for its actions are pretextual i.e., an attempt to conceal discrimination. The Commission will also examine Respondent's statement and other evidence for pretextuality. When all of the evidence has been obtained and analyzed, the Commission will determine whether it is more reasonable than not to believe that Complainant's allegations are true. The Commission determines that it is sufficient to find discrimination in a discharge case if the race, sex or other prescribed category played any causal part in the discharge of the employee. It is not necessary that race, etc., be the sole cause of the discharge. It is sufficient if the prohibited grounds was one of the considerations which led to the discharge. …where it can be shown that discrimination on the basis of race, color, religion, sex or national origin was, in part, a causal factor in a discharge or refusal to hire, the aggrieved party is statutorily entitled to damages of lost compensation. ["King v. Laborers Local 818", 443 F.2d 273 (6th Cir. 1971)].
(2) As indicated previously, the basis of the disparate treatment theory is differences in the treatment of similarly situated individuals. The concept of "similarly situated" is not one which can be precisely defined, but instead must be fitted to the particular facts of each case. In general, it means that the persons who are being compared are so situated that it is reasonable to expect that they would receive the same treatment in the context of a particular employment decision.
(B) The case of "Mabin v. Lear Siegler, Inc.", 457 F.2d (CA6, 1972) aff'd (6th Cir. 1972) illustrates the interpretive process which the Commission will follow. Judge Fox in the district court adopted the following analysis: