The corporate insurance providers require it. Drug testing allows them to avoid a lot of disability claims. This is also why employers do random drug tests. The

The corporate insurance providers require it. Drug testing allows them to avoid a lot of disability claims. This is also why employers do random drug tests. They want to ensure if someone gets hurt, the insurance will cover the disability pay and medical expense. So, they do their best to ensure no one on payroll is using any illegal substances. The thing that frustrates me about all this is that none of it has anything to do with safety or well being.