To make this example simple we will assume that you had 100 White male applicants and 100 African American male applicants - there were no female applicants for this particular job. What would show that you were consistent in effect? Look at the following numbers.
White Males African American Males
Applicants – 100 Applicants – 100
Selected – 20 Selected – 17
Selection rate for White Males=20% (20/100)
Selection rate for African American Males=17% (17/100)
To be within the 4/5ths rule, our minority selection rate must be within 4/5 of the selection rate for the majority population – in this case White Males, so we take 4/5 (80%) of 20% (or 0.8 x 0.2 =.16) or 16%. Therefore in this case we are within the 4/5ths rule, because we selected more than 16% of the African American Male applicants. If we had 40 African American Male applicants what would the figure be? Our selection rate for White Males is still 20%, so the 4/5ths value would still be 16%. We then take 16% of 40, or 6.4 African American Male applicants that we would need to hire to be within the 4/5ths rule. Of course we would round up here – you can’t have .4 of a person – so the figure would be 7.
By the way, we can also look at 6/5ths to determine the possibility of reverse discrimination, so we would want to be between 16 and 24 African American Males selected in the first example. If we are outside this value have we automatically broken the law? No! We would, however, need to investigate why we are outside the 4/5ths parameter. If there is a legitimate reason for the discrepancy that would be able to be proven in a court case, we may be OK with a selection rate that is outside the parameters.
Consistent in effect is the most complex of the four OUCH Test factors.
4. Has job relatedness – Is the action directly related to the primary aspects of the job in question? The word "primary" is very important and has been defined for us in the American's With Disabilities Act (ADA), which calls these factors “essential job factors”. Our actions always have to be job related. In other words, if your job has nothing to do with making coffee for the office in the morning I cannot base any employment action such as a hiring or firing on whether or not you can make coffee.
WARNING - The OUCH test is, as noted above a rule of thumb. It is not a legal test. However, in more than 20 years as an active manager, I don't remember a case where a company and its management were held liable in court for an action that met the four OUCH test rules. This isn't to say that it couldn't possibly happen, I just don't remember a case where it did.