Drug Testing in the Workplace - Drug Screening in the Public Sector: Municipalities and Government Workers
Certainly, there are appealing rationales for drug testing many government employees and few would dispute that police and fire personnel should be free of any substances which might undermine their job effectiveness. But while government employees may have lesser expectations of privacy than those in the private sector, the courts readily recognize that they have not abandoned all of their individual rights, and do not hesitate to enforce constitutional protections.
John B. Lewis, Drug Testing in the Workplace - Drug Screening in the Public Sector: Municipalities and Government Workers, 2 J.L. & Health 39 (1987-1988)