Popular Companies Which Drug Test Their Employees

Reviewed by: Dr. Ryan Peterson
Updated on: July 9, 2025

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Why Do Companies Do Random Drug Tests?

Drug testing is a common practice for many businesses and companies. Job applicants are often required to take a drug test during the application process. However, many companies continue to conduct drug screenings on their employees long after they have been hired.

The purpose of these drug tests is to ensure that employees are drug-free. Companies have multiple reasons why they might care about the substance abuse habits of their employees. These include:

  • Ensuring that their employees aren’t breaking laws
  • Keeping the quality of work high
  • Preventing conflict or unpredictable behavior in check
  • Preventing addiction from interfering with workplace responsibilities
  • Protecting the reputation and public image of the company

While some companies announce their drug tests well in advance, this has some disadvantages. One of the most notable disadvantages is that employees who expect these tests can prepare for them. There are numerous ways for employees to fool employer drug tests, from quitting drugs several weeks before the test to outright cheating. To get more accurate results, plenty of companies have opted to utilize random drug tests.

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How Often Do Companies Drug Test?

Different companies operate in distinct ways when it comes to drug testing. However, according to the U.S. Department of Labor, the vast majority implement a method that involves selecting employees at random from a testing pool. This process, similar to drawing names from a hat – but via a computer – is entirely arbitrary. All employees have an identical chance of being selected, but it is entirely possible for one employee to be randomly selected several times a year and for another to never be selected.

Over the last few years, however, it should be noted that the rate of random drug tests has decreased. Companies are increasingly choosing to limit their screening to the pre-employment period, and some are opting even out of that. However, depending on which company you work for, it is a good idea to be prepared for the eventuality of a drug test.

Random Drug Testing Laws

Different states have different laws when it comes to what employers can do to their employees. In California, workplace drug testing in the private sector is heavily regulated. Employees are allowed to require drug tests during the application stage, as long as these tests are conducted in a fair and consistent manner. That means if they require the test for one person but not another, there may be something amiss.

However, when it comes to individuals who are already employed, companies have limited ability to require tests. They must prove one of the following in order to ask for one:

  • Evidence that a person may be abusing illicit drugs or have an addiction
  • Evidence that a person is endangering themselves, other employee(s), or the public at large

Outside of the public sector, organizations have greater leeway for requiring screenings. Large conglomerates such as Amazon are also sometimes given more ability to require tests.

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How to Pass Random Drug Test

It can be difficult to pass a random drug test for individuals who are actively abusing illicit drugs. The randomness makes it especially difficult because even if someone does have a technique for passing the drug test, they won’t know when to be prepared. Nonetheless, there are a number of techniques people utilize to falsify the results or tamper with testing kits. It should be noted, however, that each time a method for passing is invented, the toxicologists who make drug tests also become more sophisticated about catching cheating.

Some of the most common methods for cheating drug tests include:

  • Adding a substance to the urine: By combining one's urine with a household chemical like salt, vinegar, or bleach, one can make the results of a urine test incomprehensible. It is also easy to have these substances on hand at all times, in the event of a random test.
  • Using fake urine: Synthetic urine is perhaps the most famous method. It is possible to buy fake artificial online or even in brick-and-mortar stores. Some employees even ask a friend who is sober to provide them with a “clean” urine sample. This method can be effective, but its major disadvantage is that employees have to carry around the liquid – and they may not even be tested for many months, if not years.

Ultimately, however, the most effective way to pass a random drug test is to stop taking illicit substances. For people with addictions, doing so alone can be difficult. Fortunately, addictions are recognized as legitimate mental health disorders. It is not illegal to seek help, and in many jurisdictions, employers cannot fire employees who seek treatment for addiction issues

If you are concerned about passing a random drug test, chances are your concern would be better applied to your substance abuse habits. Fortunately, drug and alcohol addictions are highly treatable and with Nuview's Los Angeles drug rehab, help is available.

  • Why Do Companies Do Random Drug Tests?
  • How Often Do Companies Drug Test?
  • Random Drug Testing Laws
  • Popular Companies Which Drug Test Their Employees
  • How to Pass Random Drug Test

  • Why Do Companies Do Random Drug Tests?
  • How Often Do Companies Drug Test?
  • Random Drug Testing Laws
  • Popular Companies Which Drug Test Their Employees
  • How to Pass Random Drug Test

Get Help Today!

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