The first condition of libertarianism is thus fulfilled. Now we come to the second part. If an employer chooses to have his employees tested, he should have made it absolutely clear when hiring them that they would be tested. It was then up to them to decide whether they wanted to work for his firm or not. If the employer decided to have a new policy of drug testing implemented in the company, then he must give his employees at least a period of six months to decide whether they wanted to continue working or not. In case they were on drugs before, this six-month period will give them a chance to give up the habit and become cleaner. Thus no one's liberty and rights would be hurt and everyone would get a fair deal. (Shaw, 2007)

John Rawls came up with a rather interesting theory of ethics and justice....
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