In fact, the much-publicized claims that drug consumption costs businesses billions of dollars in lost productivity and accidents are all based on a single study which the federal government has since found to be flawed. Plainly put, drug tests have nothing to do with safety or productivity. Businesses and employers must make it clear that drug use and employment are incompatible. The report goes on to encourage employers to institute drug testing programs for all employees. 8 Drug tests in the workplace are nothing more than the government's attempt to manufacture negative consequences for drug consumers who otherwise might encounter none.
Drug tests violate workers' rights.
Drug tests violate the constitutional guarantee of presumption of innocence, placing the burden of proof on the accused. By being required to give a sample, the worker is forced to defend himself or herself against a charge without any evidence or suspicion. American workers are now treated as guilty until proven innocent. Drug tests can reveal private details far beyond what substances a person chooses to ingest. Urinalysis can also reveal if a female employee is pregnant.