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  2. Skinner v. Railway Labor Executives Ass'n - Wikipedia

    en.wikipedia.org/wiki/Skinner_v._Railway_Labor...

    The FRA also adopted regulations that authorized railroads to administer breath and urine drug tests to employees who violated safety rules. The Railway Labor Executives' Association , an umbrella group of railway trade unions , sued to have the regulations declared an unconstitutional violation of the Fourth Amendment to the United States ...

  3. Drug test - Wikipedia

    en.wikipedia.org/wiki/Drug_test

    Hair testing is commonly used in the USA as pre-employment drug test. The detection time for this test is roughly 3 months, which is the time, that takes head hair to grow ca. 1.5 inches, that are collected as a specimen. Longer detection times are possible with longer hair samples.

  4. Employee Polygraph Protection Act - Wikipedia

    en.wikipedia.org/wiki/Employee_Polygraph...

    Workplaces in the United States must display this poster explaining the Employment Polygraph Protection Act to employees. The Employee Polygraph Protection Act of 1988 (EPPA) is a United States federal law that generally prevents employers from using polygraph (lie detector) tests, either for pre-employment screening or during the course of employment, with certain exemptions.

  5. J. B. Hunt - Wikipedia

    en.wikipedia.org/wiki/J._B._Hunt

    J.B. Hunt added hair testing for drugs to all pre-employment tests since May 2006, in addition to Federal Motor Carrier Safety Administration (FMCSA) mandated urine testing. [16] Hair testing can detect prior drug usage for up to 90 days. [17] Drivers are also trained and certified in the safety training program Smith System. [18] [19]

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  7. National Treasury Employees Union v. Von Raab - Wikipedia

    en.wikipedia.org/wiki/National_Treasury...

    National Treasury Employees Union v. Von Raab, 489 U.S. 656 (1989), was a United States Supreme Court case involving the Fourth Amendment and its implication on drug testing programs. The majority of the Court upheld the drug testing program in the United States Customs Service.