Drug Testing? Discrimination?

Tweet

I think companies that require drug testing to be somewhat discriminatory. Think about it this way... most drugs, yes are illegal, I understand this. What an employee does in his or her own time is up to the employee though, right or wrong? Where I work, the company does not drug test their employees, at the start or during their position within the company... basically for this reason. Do you think drug testing for a position within a company is discrimination?