Yes, Grainger drug tests for the majority of company positions, but whether a drug test is performed also depends on the job location.
The Grainger careers website lists multiple positions that require drug testing, such as warehouse associate, on-site service specialist, CDL driver route representative, and on-site service representative. In addition, driver positions are subject to Department of Transportation requirements, which require drug testing pre-employment, post-accident, randomly, when there is reasonable suspicion, and when returning to duty.
The Grainger employee handbook states: “Team members are expected to perform their jobs alcohol and drug free. Being in possession of or working under the influence of drugs or alcohol can create a safety hazard and affect your judgment and performance. We recognize that on occasion, alcohol may be provided at a company-sponsored event or with a business meal. You should ensure that your
consumption of alcohol does not impair your performance and judgment.”
This information was obtained after hours of research from various websites with answers from current and former Grainger employees, the Grainger careers website, and the Grainger employee handbook.

What Type of Drug Test Does Grainger Use?
Our research indicates that Grainger uses urine and mouth swab drug tests.
Urine drug tests, including the instant varieties, can range from four-panel to sixteen-panel. The number of panels means the number of substances that are tested for. The specific substances that are tested can vary depending on the type of test used. Five-panel is the most commonly used.
Five-panel urine drug tests test for:
- Marijuana/Cannabis
- Cocaine
- Opiates
- Amphetamines
- Phencyclidine
Mouth swab drug tests can detect a variety of different substances, including:
- Alcohol
- Amphetamines
- Barbiturates
- Benzodiazepines
- Cocaine
- Marijuana
- Methamphetamine
- Opioids
- Phencyclidine
These drug tests are paid for by Grainger, and can occur on-site or at an independent laboratory.
When Does Grainger Drug Test?
Our research indicates that Grainger drug tests pre-employment and also if there is suspicion of substance use or in the event of a workplace accident. There have also been reports of random drug testing from current and former employees.
Grainger Drug Testing Process
How Long Do Grainger Drug Test Results Take?
We could not find specific information to answer this question, but typically, urine and mouth swab drug tests can take up to a few days to produce a result when conducted at a laboratory. There are also instant urine and mouth swab drug tests that take only a few minutes to show results.
What Happens if you Fail a Drug Test at Grainger?
Failing a pre-employment drug test at Grainger can prevent you from getting hired. Failing a random drug test at Grainger can lead to disciplinary action, including termination.
Does Grainger Call You if You Fail a Drug Test?
We could not find specific information to answer this question, but typically, employers will contact you if you fail a drug test.
Employee Drug Testing Policies for Grainger

Does Grainger Drug Test Seasonal Employees?
Many current and former seasonal Grainger employees report that drug testing was conducted.
Does Grainger Drug Test Warehouse Employees?
Many current and former Grainger warehouse employees report that drug testing was conducted.
Does Grainger Drug Test Employees?
Some current and former Grainger employees report only pre-employment drug testing, while others say there is also random drug testing. Drug testing is also required if there is suspicion of drug use and for on-the-job accidents.
Does Grainger Drug Test For a Promotion?
Current and former Grainger employees report that drug testing is not performed for a promotion.
Does Grainger Drug Test if You Get Injured on the Job?
Yes, Grainger requires drug tests after on-the-job accidents. This is consistent with most companies who drug test after accidents in the workplace that result in damage to properties or injury within the workplace. This is for liability reasons as a positive drug test would void any potential worker’s compensation claims.
Marijuana Drug Testing at Grainger
Does Grainger Drug Test For Weed?
Some current and former Grainger employees report that the company no longer tests for marijuana, while others report that they still do.
Does Grainger Accept a Medical Marijuana Card?
According to some current and former Grainger employees, medical marijuana is accepted. However, others report that medical marijuana is not accepted.