Regarding drug and alcohol testing of employees by employers: a. the Constitution prohibits any public sector employer from testing its employees under any circumstances without a warrant. b. federal legislation sets forth comprehensive guidelines for the practice. c. the constitutional protection from unwarranted search and seizure protects private sector employees from the practice. d. the NLRB makes it a mandatory subject of collective bargaining in a union setting.

Drug Testing is commonly use during employment process. It is used prior to hiring. It is a part of the periodic medical exams, to know that employees who have been through drug rehabilitation programs are clean, upon observation of a behavior that create reasonable suspicion of drug use.

National Labor Relations Act is simply a federal statute that is used in governing collective bargaining, among other things, and the law is towards companies with union employees.

There is the Implementation of a drug-testing program, under the NLRA, which is a mandatory subject of collective bargaining that is, an employer is not permitted to initiate or implement a drug-testing program without first negotiating its terms with union representatives.