Click on the following links. Please note these will open in a new window.

Workplace Drug Testing
http://www.theatlantic.com/business/archive/2015/06/drug-testing-effectiveness/394850/

More Workplace Drug Testing
https://www.aclu.org/workplace-drug-testing

Drug Testing in the Workplace
http://www.lectlaw.com/files/emp02.htm

Surveillance in Schools
http://www.theguardian.com/uk/2011/jun/09/schools-surveillance-spying-on-pupils