Is Workplace Drug Testing Worth The Cost? UK Employer Guide

Is workplace drug testing worth the cost? A cost-benefit guide for UK employers

This article is for general educational purposes only and does not constitute legal, financial or medical advice. Prices and figures are correct at the time of writing (November 2026), and worked examples are illustrative.

Workplace drug testing often gets judged on the price of a test kit, but the kit is usually one of the smallest costs in a testing programme. A fair cost-benefit decision also weighs staff time, laboratory confirmation and training against what testing could protect, including your people, your contracts and your legal position.

This guide sets out what a programme really costs, where the benefits are strongest and where the evidence is weaker. Where impairment could seriously injure someone, the case for testing rests on safety first and cost second. For other workplaces, the answer depends far more on your risks, your contracts and your workforce.

What does workplace drug testing cost in the UK?

The true cost of a workplace drug testing programme usually falls into five areas:

• Screening test kits: the cost per test falls as pack sizes rise.
• Laboratory confirmation: any non-negative screening result should be confirmed by a UKAS-accredited laboratory before you act on it.
• Staff time: this includes the person being tested, the person collecting the sample and any cover needed while they step away.
• Training: anyone carrying out tests needs to understand sample collection, chain of custody and how to handle results.
• Policy and administration: this covers your drug and alcohol policy, consent forms, secure records and regular reviews.

For straightforward general screening, a urine drug test is often the most economical starting point. The ALLTEST 7 panel workplace kit costs £3.99 for a single test, falling to £2.50 per test in a pack of 100.

A saliva drug test costs more, but it is easier to supervise, needs no toilet facilities and is better suited to identifying recent use. The ALLTEST DSD-877 also includes an alcohol screen, which can remove the need for a separate alcohol test. It costs £8.50 for a single test, falling to £7.40 per test in a pack of 100.

A worked budget for 100 workplace drug tests

This example shows the first-year cost of 100 tests using live UK Drug Testing prices, including VAT. We have planned for five non-negative results, based on our guidance to expect a 4% to 6% positive rate in random workplace testing. Each one has a single laboratory confirmation at £66.

Cost	Urine programme	Saliva programme, including alcohol screen
100 screening tests	£250.00	£740.00
5 laboratory confirmations	£330.00	£330.00
Online training	£0 (included with a single order over £500)	£0 (included with a single order over £500)
Illustrative staff time	£1,000.00	£1,000.00
Estimated total	£1,580.00	£2,070.00
Estimated cost per test	£15.80	£20.70

The staff time figure assumes 15 minutes each for the employee and the collector, costed at £20 an hour. Replace this with your own rates, because staff time can easily become the largest cost in the programme. In this example, it is four times the cost of the urine kits. If each sample needs a second confirmation for another drug group, add a further £66. Policy writing and legal advice are not included.

Why the cheapest kit is not always the cheapest option: a saliva test may cost more per kit, but it could save money if your sites have limited toilet facilities or you would otherwise buy separate workplace alcohol tests.

What does drug and alcohol misuse cost UK employers?

There is no single reliable figure for what drug and alcohol misuse costs each UK employer. National estimates can provide context, but they should be used carefully:

• Alcohol and lost productivity: a government impact assessment put the UK cost at around £7.3 billion a year at 2009-10 prices.
• Hangovers at work: the Institute of Alcohol Studies estimated a cost of £1.2 billion to £1.4 billion a year.
• Illegal drugs: Dame Carol Black's independent review estimated a total cost to society of more than £19 billion a year, although this also covers health and crime.
• All workplace injury and ill health: HSE estimated a cost of £22.9 billion in Great Britain in 2023/24, with 40.1 million working days lost in 2024/25. These figures cover all causes, not just drugs or alcohol.
• All sickness absence: employers responding to the CIPD's 2025 survey reported an average of 9.4 days per employee per year, again from all causes.

The best evidence for your business will come from your own records. Review absence patterns, near misses, incident reports, lost contracts, disciplinary cases and recruitment costs before you decide whether a programme is justified.

The business benefits of workplace drug testing

Meeting customer and contract requirements

In some sectors, a credible drug and alcohol process can be part of qualifying for work. FORS Bronze, for example, requires fleet operators to have policies and procedures covering driver fitness, including impairment through drugs and alcohol. The rail industry's safety-critical standard also requires transport operators to have a drugs and alcohol policy for staff carrying out safety-critical tasks.

If you tender for work in transport, rail or construction, check what each client requires. The value of one retained contract may be far greater than the cost of the programme.

Reducing avoidable safety and legal risk

Employers have a general duty under the Health and Safety at Work etc. Act 1974 to protect employees' health, safety and welfare as far as reasonably practicable. They must also assess workplace risks. Under the Sentencing Council's guideline for England and Wales, turnover is used to help set fines for health and safety offences, which can range from £50 to £10 million. Very large organisations can face more.

Organisation size by annual turnover	Upper end of the fine range
Micro: under £2 million	£450,000
Small: £2 million to £10 million	£1.6 million
Medium: £10 million to £50 million	£4 million
Large: £50 million and over	£10 million

Testing is not a legal shield and these fines apply to health and safety offences generally. Its value lies in forming one part of a documented approach to managing a foreseeable risk.

Making better recruitment decisions

Pre-employment drug testing can help you apply your policy before investing in onboarding and training, especially for safety-critical roles. Tell candidates about testing from the start and make sure the process is fair, relevant to the role and applied consistently.

Supporting fairer, more defensible decisions

A rapid test is a screening tool. Using UKAS-accredited laboratory confirmation with full chain of custody helps you exclude false positives before taking disciplinary action. At £66 per drug group, confirmation is a small cost compared with the risk of making a major employment decision based on an unconfirmed result.

What workplace drug testing cannot prove

A good business case should be honest about the limits of testing. The Independent Inquiry into Drug Testing at Work, published in 2004, found that the evidence linking drug use with workplace accidents, absence and poor productivity was inconclusive. It also found no clear evidence of a significant deterrent effect. Although that research is more than 20 years old, it remains a useful reminder not to overstate the return.

A positive test also does not automatically show that someone was impaired at work, as some drugs can be detected long after use. HSE advises employers to think carefully about what screening is for and what they will do with the results, and makes clear that screening alone will not solve drug misuse at work. Good management, fair policies and access to support all still matter.

Under ICO guidance, drug and alcohol testing should be restricted to health and safety at work, not used to investigate private lives. Workers should know when testing may take place, and you must not test samples collected without their knowledge. Any savings can disappear quickly if a programme is unfair or poorly communicated.

Which businesses have the strongest case for workplace drug testing?

Workplace situation	Strength of the case	Suggested starting point
Driving, machinery, rail, construction and other safety-critical roles	Strong	A written policy, screening relevant roles and using laboratory confirmation
Contracts that ask for drug and alcohol controls	Strong	Match your policy and testing process to the client's requirements
Specific concerns or a workplace incident	Moderate to strong	For-cause and post-incident testing, if your policy allows it
Lower-risk roles with no specific concerns	Weaker	Focus on policy, manager training and support before considering testing

In-house or third-party workplace drug testing?

Testing model	Main cost	Often suits	Watch out for
In-house	Kits, staff time and training	Regular testing, especially across several sites	You need trained collectors, consistent procedures and secure records
Hybrid	A mix of in-house costs and provider fees	Employers who want routine control with outside support	Roles and responsibilities need to be clearly defined
Third-party collector	Provider call-out or service fees	Low test volumes or employers without a suitable collector	Availability may be limited after an incident, so check response times

Compare at least a full year of costs, not just the price per test. Include travel, call-out charges, confirmation fees and the time employees spend away from work. Our guide to legally defensible workplace drug testing explains the role of each stage.

How to reduce the cost of workplace drug testing

• Match the test to the risk: choose the drug panel and sample type that fit your workplace rather than simply buying the largest panel.
• Buy in the right quantity: larger packs usually reduce the cost per test, but check you will use them before they expire.
• Schedule repeat orders: Subscribe & Save starts at 12% off and rises to 15% from your fifth delivery.
• Ask about volume pricing: Wholesale enquiries are available for larger programmes.
• Keep laboratory packs on site: having confirmation packs ready can help you avoid delays after a non-negative result.
• Train collectors before you start: invalid tests and incorrect paperwork waste both money and staff time.

How to build a business case for workplace drug testing

Before presenting your proposal to directors or senior managers, work through these steps:

• Define the purpose: set out which roles and risks you want testing to address.
• Gather your baseline: use your own incident, absence, recruitment and contract information.
• Calculate the full cost: include kits, confirmation, training, staff time and administration.
• Estimate a break-even point: divide the annual programme cost by the cost of one lost day, incident or contract.
• Include non-financial benefits: safety, customer confidence and fairness may matter more than a simple return on investment.
• Plan what happens next: your policy should cover confirmation, support, disciplinary steps and confidentiality.
• Review the results: after 12 months, check whether the programme is meeting its purpose and adjust it if needed.

Using the worked urine example above, and an illustrative £200 for each lost day, the £1,580 programme would equal around eight lost days a year. For 100 employees averaging 9.4 days' absence, that is less than 1% of total absence. This is a way to test the numbers, not a prediction that testing will prevent those absences.

If you are starting from scratch, our Workplace Drug Testing Starter Package brings together rapid screening devices and UKAS-accredited confirmation testing kits in one order.

Workplace drug testing costs: frequently asked questions

How much does workplace drug testing cost per employee in the UK?

It depends on the test, the volume and your staff time. In our worked example, the cost was £15.80 per urine test and £20.70 per saliva test, including confirmation and illustrative staff time. The urine kit alone cost £2.50 per test in a pack of 100.

Is workplace drug testing a legal requirement for UK employers?

Not for most employers. All employers must manage health and safety risks, and some sectors have their own rules, standards or customer requirements. Check what applies to your industry and take legal advice if you are unsure.

Can small businesses justify the cost of workplace drug testing?

They can if the risk is real, particularly where staff drive, operate machinery or work on client sites. Smaller employers may find it more cost-effective to test only relevant roles, or to start with a clear policy and well-defined testing rules.

How many laboratory confirmation packs should UK employers keep?

We recommend keeping at least one pack if you carry out workplace testing. For random testing, plan around a 4% to 6% positive rate. Remember that urine and saliva laboratory packs cannot test for alcohol.

Is urine or saliva drug testing better value for employers?

Urine testing usually has the lower kit cost and a longer detection window. Saliva testing costs more, but it is better suited to recent use and can be easier to manage on site. The better-value option is the one that fits your purpose, workplace and policy.