Cannabis and Work in Seville: Drug Testing, THC and Your Rights

It is one of the questions we hear most often, and also one that many people ask themselves silently before deciding to join a cannabis social club in Seville. Could it affect my job? Could I be dismissed? What happens if there is a drug test?

In this article we answer these questions with real information, without alarm and without downplaying the risks. Because the honest answer is neither “don’t worry, nothing will happen” nor “it’s very risky”. It depends on your specific employment situation, and it deserves a clear explanation.

Can my employer find out I am a member of a cannabis club?

There is no legal mechanism by which an employer can access information about whether an employee is a member of a cannabis social club. CSCs are private associations registered under Spanish association law, and their member data is protected by data protection regulations (GDPR). Your employer cannot request it, and the club cannot provide it.

What an employer can do is carry out alcohol and drug tests in the workplace, within the limits established by Spanish law. And here is the important distinction: a drug test does not detect whether you are a club member or where you consumed. It detects the presence of substances in your body at the time of the test. These are completely different things.

Are workplace drug tests legal in Spain?

Yes, but with conditions. The Supreme Court and the Constitutional Court have established that workplace drug tests are legal as long as a series of requirements are met: they must be provided for in the collective agreement or contract, they must be proportionate to the risk of the role, they must be carried out with privacy guarantees and the worker must have been previously informed of their existence.

The sectors where drug testing is most frequent and where regulations are strictest include:

How long does THC remain detectable in the body?

This is the most practical question, and the answer is not straightforward because it depends on several factors: frequency of use, quantity consumed, individual metabolism, body weight and fat percentage (THC accumulates in fatty tissue) and the type of test used.

As a general reference, based on available scientific literature:

Can I be dismissed for testing positive for drugs?

It depends. In Spain, testing positive in a workplace drug test does not automatically result in a fair dismissal. Employment case law has established that the employer must prove that consumption has affected work performance or put safety at risk, not simply that traces of a substance were detected.

However, in certain roles where sector-specific regulations are very strict (such as civil aviation, transport of hazardous goods or certain positions in nuclear facilities), the consequences of a positive result can be more severe and may be governed by specific regulations beyond general employment law.

In any case, if you face this type of situation at work, the most important thing is to consult an employment lawyer or your union’s legal service before signing any document.

Cannabis and driving in Seville

This point deserves a specific section because it is where the law is clearest and the consequences most direct. In Spain, driving under the influence of cannabis is a serious offence under the Traffic Law, regardless of whether the person consumed at a private club or in any other context.

The Guardia Civil and local police carry out saliva tests at roadside checks that detect the presence of THC. Unlike alcohol, there is no specific legal threshold for cannabis: any positive detection in saliva can result in a penalty, even if the driver shows no visible signs of impairment. Penalties range from significant fines to penalty points or, in the most serious cases, disqualification from driving.

What is clear: being a CSC member carries no direct legal risk

Being a member of a cannabis social club in Seville like Green City is a completely legal act protected by the right of association. Your employer cannot penalise you for it, cannot access that information and cannot use it as grounds for dismissal. Membership of a private association is a fundamental right recognised by the Spanish Constitution.

What can have potential consequences in the workplace is the presence of THC in your system at the time of a test, if that test is legally provided for in your role. The decision of when to consume and how frequently is therefore a personal one that each member should make with full knowledge of their specific employment situation.

At Green City Sevilla we believe in responsible and informed consumption. If you want to know more about how the club works and what membership involves, you can read our guide on how a cannabis social club works in Seville.

Frequently asked questions about cannabis and work in Seville