A drug test involves testing a biological sample, such as urine or hair, for the presence of a legal or illegal drug. There are several possible uses for a drug test, the most common of which is for pre-employment screening. Employers must provide a safe work environment, and they want to ensure their employees are productive, but is maintaining a drug-testing program in furtherance of these goals worth the hassle? The answer may depend on the workplace.
![Drug testing—background and why](https://workz360.com/wp-content/uploads/2022/11/blog_featured-image_resources_gig-working.jpg)