There are no State laws regarding Missouri employment drug testing, so employers are relatively free to put a drug/alcohol testing policy into practice as long as they are unbiased and don’t infringe upon any employee rights concerning discrimination, privacy, and decency. Before performing any drug/alcohol testing, an employer must inform their employees of their drug testing policy in advance.

Is Certified Testing Required? Not specified.

Can Current Employees Be Tested? Yes.

Laws – There is no Missouri statute regarding drug/alcohol testing.

What can be Tested? No restrictions.


Step 1 – Once the employee has been informed of their employer’s drug testing policy, they should fill out a Drug Test Release Form and return it to their employer or appropriate department.

Step 2 – In order to perform a test on the employee, a physical sample must be taken and submitted to a lab for testing. On the Substance Abuse and Mental Health Association’s (SAMHSA) website you can find a list of certified laboratories which perform drug/alcohol testing.

Step 3 – The lab will give the results of the drug/alcohol testing to the employer once the testing is complete. The employer then has the right to perform whatever action they deem necessary and, in the case of a positive result, the employee has the right to explain their result.