Trading floors, deal teams, and risk desks run on sharp focus and fast decisions. Even small dips in attention or reaction time can move prices, miss fills, or break a control process.
Outside work, access to cannabis is growing and delivery is common in many cities. You can even find services advertised as Pre Rolls Delivery Richmond.
In the office, the bar is different. Finance firms answer to regulators, clients, and internal controls that all expect people to be clear headed on the job.
Photo by Yash Lucid
How Cannabis Affects Focus
Cannabis can affect attention, memory, and coordination soon after use. That is not a moral view, it is a performance fact. Major health authorities note short term changes in thinking, memory, coordination, movement, and time perception within 24 hours of recent use.
For roles that rely on rapid calculations, order entry, or sign offs, even a small slowdown can show up as errors or missed risk signals.
The finance context raises the stakes. Dealers, portfolio managers, treasury staff, and anyone with system access that can move money or positions face higher expectations.
Even if a firm does not drug test, it can hold employees to safe performance standards and may investigate if a pattern of mistakes or control breaches appears.
Conduct And Fitness Rules
Firms regulated in the UK assess whether senior managers and certified staff are fit and proper. The test covers honesty, integrity, and reputation, as well as competence and capability.
Firms document how they meet those standards and act when they see risks to performance or judgment. While the rules do not single out one substance, regular impairment, policy breaches, or poor decisions linked to substance use can raise fitness concerns.
For most staff, the practical rule is simple. Do not be under the influence at work. Do not attend client or investor meetings impaired. If a role is safety critical or market critical, firms may apply stricter rules, up to zero tolerance during work hours and on call periods.
Set A Clear Policy
Clear written policies help managers and staff know what to do. A good policy sets standards for being fit for work, explains when testing may be used, and shows how people can disclose medications that could affect performance.
UK health and safety guidance encourages firms to set a policy, manage risks, and support staff who ask for help. Consistency matters, so the policy should apply across teams and locations unless local law requires changes.
Managers should record performance issues factually, not speculate. Time stamps, trade IDs, ticket numbers, and client feedback help show patterns.
HR can then focus on outcomes, not labels. In many cases, coaching and workload fixes solve the problem. Where impairment is suspected, follow policy and involve HR and Occupational Health.
Trading And Control Tasks
Front office roles live by seconds and basis points. Post trade and middle office teams protect the firm from breaks and misbookings. Here are practical steps that respect staff while protecting the firm.
Set clear pre duty rules. Do not rely on vague terms. If a desk requires clean performance at 7 a.m., state a no use window that reflects how long effects can last for most people.
Use dual controls for high risk actions. Four eyes checks, maker checker flows, and automated pre trade risk limits reduce the chance that one person’s lapse becomes a loss event.
Encourage early flags. If someone slept badly or used a substance the night before and feels off, create a culture where they can say so. Move them to lower risk tasks for that shift. This is common in airlines and healthcare and it works in finance too.
Medical Use And Adjustments
Medical cannabis exists in the UK, but access is specialist led and closely controlled. Firms should treat medical use like any other prescribed medicine that may affect alertness.
Ask for Occupational Health input, keep health data confidential, and consider adjustments where it is safe to do so. Examples include moving the person to tasks with lower error impact during certain hours, or setting a longer pre duty no use window.
If the role is safety or market critical and no safe adjustment exists, redeployment may be the right call.
Testing should follow law and policy. Random testing is usually limited to safety critical roles. Where testing is used, give clear notice in contracts or handbooks, explain who is covered and why, and handle results with care and privacy.
Tips For Employees
Know your firm’s policy and your role’s risk level. If you choose to use cannabis outside work, plan time and dose with your work duties in mind. Avoid use before shifts that demand high attention. Be extra cautious before early opens, earnings days, and release windows.
If you feel off at the start of a shift, speak up early. Ask to switch to lower risk tasks for that day. Keep a record of how you felt and what you did. Over time, you will learn where your personal margin is. If you use a prescribed product, talk to HR and Occupational Health about safe scheduling and any documentation you need.
Steps For Firms
Write a short, plain policy that staff can read in minutes. Cover fitness for work, medical disclosures, testing where lawful, adjustments, and support routes.
Make sure the policy fits the control framework and the conduct rules for your jurisdiction. Train managers to handle conversations calmly and to record facts, not views.
Link the policy to operational controls. Map the riskiest tasks and define rules for who can do them and when. Align this with shift planning so people who signal low readiness are not assigned to high risk tasks that day.
Offer support. Employee assistance lines, Occupational Health, and manager toolkits help people course correct early. Supportive culture reduces silent risk. It also makes it easier to show regulators that the firm manages conduct and competence risks in a fair way.
Keep records. If you adjust someone’s duties, note the reason in neutral terms and the control you used. Documenting decisions shows the firm acted reasonably and protects both staff and managers.
What To Remember
Consumer access and delivery services may make cannabis feel routine outside work, but finance is a high stakes environment that depends on clear thinking and strong controls.
Firms need simple policies and steady management habits that protect performance and treat people fairly. Employees need to plan their off duty choices so they arrive ready to do precise work.
The mix of clear rules, early conversations, and good records keeps risk low and trust high.
