Are employers allowed to carry out random drug tests at work?
In Sweden, random drug testing at work is allowed in certain industries and professions. However, there is no law that generally authorises employers to drug test their employees. Instead, the possibility for employers to introduce these tests is typically regulated through one or more of the following:
- Collective agreement
- Employment contracts
- The practice of the Labour Court
- Work Environment Act (AML)
Employers have a responsibility under the Swedish Work Environment Act to ensure a safe and secure working environment, which may justify drug testing in some industries. At the same time, the employee’s personal integrity is protected by the GDPR and the European Convention on Human Rights. Therefore, in order for drug testing to be legal, employers must strike a balance between workplace safety and personal privacy.
To ensure that the tests are carried out in a legally sound way, you, as an employer, should have clear policies and agreements in place.
Drug testing: Rules for the private and public sectors
There are important differences between the public and private sectors when it comes to drug testing:
Public sector: In the public sector, employers have limited legal grounds to conduct random drug tests. For tests to be authorised, there must be a clear legal basis and a strong security justification.
Private sector: In the private sector, employers generally have more scope to introduce random drug testing, especially if supported by collective agreements or employment contracts. However, private employers must also ensure that tests are carried out in a legally compliant manner, respect the privacy of the employee, and comply with the GDPR when handling test results.
The purpose of random drug testing at work
Drug testing in the workplace has several purposes:
- Identifying employees with addiction problems early on to offer support
- Protecting the working environment and minimising the risk of accidents
- Meeting safety requirements, especially in hazardous occupations
- Preventing drug problems in the workplace
In addition to identifying individuals with potential addiction problems and ensuring a safe working environment, the introduction of random drug testing can also act as a deterrent to drug use among employees. It also sends a clear message about the company’s stance on drug use and can help prevent future misuse.
Who can carry out random alcohol and drug tests?
Drug tests should be carried out by accredited and independent organisations to ensure that they are legally valid and can be used as evidence in court. Tests that are not conducted properly or by an accredited provider may be legally contested.
There are three main types of tests:
Urine tests
The most common method for detecting drugs in the body.

Saliva tests
Faster method, but shorter detection time.

Blood tests:
Used in case of suspicion of ongoing drug use

How should drug tests be conducted?
To ensure that drug testing is legally compliant and ethically justifiable, the employer should:
- Develop a clear and transparent alcohol and drug policy in consultation with trade union representatives.
- Inform all employees about the policy and the consequences of positive test results.
- Use certified or independent organisations to guarantee that results are reliable and legally valid.
- Comply with the GDPR by protecting employees’ personal data and restricting access to test results.
By following these guidelines, employers can implement drug testing in a way that respects the rights of employees while maintaining a safe and productive work environment.
DISA offers professional and fully compliant drug testing for employers who want to create a safe and drug-free work environment. Read more about our alcohol and drug testing processes here.
What happens if an employee tests positive?
If an employee tests positive in a random test, the employer can take action, depending on the company’s drug and alcohol policy and any relevant agreements. Common actions can be, for example:
- Counselling and guidance for treatment
- Temporary suspension or redeployment
- In serious cases, termination
Drug testing at work should not be seen solely as a control measure, but as part of a supportive approach to help employees struggling with addiction.
Alcohol and drug testing in the workplace – how DISA can help
DISA can help your company manage the entire process of alcohol and drug testing for new and existing employees – from choosing test methods to analysing and managing results. We ensure full compliance with current laws and guidelines and that your candidates have a safe, respectful, and professional experience.
DISA also performs pre-employment background checks, which, together with alcohol and drug tests, give you a comprehensive picture of a candidate.
Want to know more about how DISA can help your company with drug testing and background checks? Contact us to learn more or book a free consultation.