Learn how long you need to keep I-9 forms and when you can shed them.

Before a newly hired employee begins work, employers must verify the worker is legally allowed to labor.

A high-profile lawsuit is a reminder to review the company “playbook” on substance use and abuse in the workplace.

Here's what to do if an employee smells of alcohol.

Learn the three things you need to know about the ADA's position on substance abuse.

The rate of positive drug test results among the U.S. workforce is at a 12-year high.

The ADA does not prohibit drug and alcohol testing, but consult an attorney before taking disciplinary action.

The ADA states that drug tests are not medical examinations.

Proper handling of drug and alcohol abuse may help a good worker to return to top form.

Employers may have flexibility to exclude medical marijuana users from safety-critical construction roles.