According to the contract between the union and the company, every employment decision at the Spears School of Driving is based on seniority. That is, the employees who have been at Spears the longest get first opportunity for promotions, working the day shift, and not working overtime. Due to a decline in business, Spears must lay off 20 employees. On the basis of seniority, 10 of these employees are African American and 10 are White. Of the 200 employees who will keep their jobs, 180 are White and 20 are African American. Is this practice legal? Why or why not?