21.15(1) Pay equity is achieved for a female job class in an establishment of a seeking employer under the proxy method of comparison,

a) in the case of a key female job class,

(i) when the class is compared with those female job classes in a proxy establishment whose duties and responsibilities are similar to those of the key female job class, and

(ii) when the job rate for the class bears the same relationship to the value of the work performed in the class as the pay equity job rates for the female job classes in the proxy establishment bear to the value of the work performed in those classes; and

b) in the case of any other female job class,

(i) when the class has been compared with the key female job classes in the establishment of the seeking employer, and

(ii) when the job rate for the class bears the same relationship to the value of the work performed in the class as the pay equity job rates for the key female job classes bear to the value of the work performed in those classes.