Which of the following is not one of the requirements under the Drug$-$Free Workplace Act of $1988?$

Developing standards of enforcement for those who violate the rules.

Creating a drug$-$awareness program to help employees understand the dangers and health consequences of drug use.

Having every employee sign a contract version of this policy to declare their awareness of the employer's policy and the consequences of violating it$.$

Developing a written policy that prohibits the production, distribution, use, or possession of a controlled substance in the workplace.