Mae James owns her own catering company. She continually monitors her other expense costs, including the cost of liability insurance for drivers of her catering vans. This year, Maes auto insurer advises her that insurance rates for her coverage will increase by 15 percent next year. The insurance company also states that if Mae will institute a preemployment drug-testing program for those employees who will drive her vans, there will be no insurance rate increase.

Mae does not currently require potential employees to agree to be drug-tested prior to becoming employed in her business, but it is legal to do so in her state.

What should Mae tell potential employees about her reason for implementing a preemployment drug-testing program? What should she do if a potential employee refuses to agree to the test?