The stock exchange conducts pre-employment drug testing, but does not test employees.
Both of the tested employees had earlier been immunized against anthrax, and are now taking antibiotics as a precaution, Commander Sandoz said.
In 1999 it received a warning for not testing employees for drugs and was cited again last year for failing to comply with maintenance standards, the agency said.
On Oct. 14, the people who worked at the processing center were told that there were no plans to test employees.
Testing employees' water is so embedded in the city of Chicago's protocols that the city has developed two separate sets of instructions for sampling water: one for city employees and one for the general public.
In addition, Paul Smith, a post office spokesman, said that the Centers for Disease Control and Prevention, with the help of Cooper Medical Hospital, was planning to set up mobile testing units outside the post office tonight to test employees, offer antibiotics and provide flu shots.
Last week, a federal court in Minnesota ruled that two Vikings players could challenge their suspensions in state courts in Minnesota, where laws for drug-testing employees are worker-friendly.
For example, a federal agency could periodically test employees, with their consent, to see if they had suffered chromosomal damage or genetic alterations because of exposure to radiation or toxic substances in the workplace.
Some non-statutory tribunals will consider polygraph evidence, and there have been cases of employers seeking legal advice on the legality of testing employees following pilfering or leaking of information.
They can even include quizzes to test employees' comprehension of the content.
