Working conditions: compare male and female job classes using one of the following: Job-to-job method comparing pay for male and female dominated job classes where each female job class is compared to a male job class of equal or comparable value. Description of the unit for which pay equity plan has been developed. Identification of all job classes that formed the bases of comparisons. Description of the gender-neutral job evaluation system used. Where more than one method of comparison was permissible. For those job classes where differences in compensation exist which are not permissible explanation of how compensation will be adjusted to achieve pay equity. Unions do make a difference in wages earn approx 10% more than non-unionized workers. The size of the gap varies from year to year high unemployment union impact is greater: structure of wages presence of a union adds about 20-30% of benefits for employees.