55. A job class shall be considered predominantly female or predominantly male if 60% or more of the positions in that class are held by employees of the same sex.
A job class may also be considered predominantly female or male if1° the difference between the rate of representation of women or men in the job class and their rate of representation in the total workforce of the employer is considered significant;
2° the historical incumbency of the job class in the enterprise indicates that it is a predominantly female or predominantly male job class; or
3° owing to gender stereotypes of fields of work, the job class is commonly associated with women or men.