Competition Law Essentials: What Every Employee Should Know

Most employees never expect to have anything to do with "competition law." It sounds like a matter for corporate lawyers and boardrooms, not for someone chatting to a rival firm's rep at a trade show or agreeing prices with a supplier. In reality, it's the opposite: competition law breaches almost always start with an ordinary conversation, email or WhatsApp message between people doing their jobs — usually in sales, marketing, procurement or business development. This guide explains, in plain English, what UK, Irish and EU competition law actually prohibits, what the penalties look like, and how to handle the situations where the risk is highest. If you want a fuller, certified grounding in this and related compliance topics, Learnsignal's CPD courses cover competition law alongside the wider ethics and governance curriculum professionals are expected to complete each year.

Why This Applies to You, Not Just "Legal"

Competition law (also called antitrust law) exists to keep markets working properly — so that prices, quality and innovation are driven by genuine competition rather than by firms quietly agreeing not to compete. The UK's Competition and Markets Authority (CMA) and Ireland's Competition and Consumer Protection Commission (CCPC), alongside the European Commission for cross-border conduct, enforce these rules. Crucially, the people who trigger investigations are rarely executives signing formal contracts — they're account managers, buyers, pricing analysts and marketing staff having what feels like a normal business conversation. That's exactly why every employee who deals with competitors, customers or suppliers needs a working grasp of the basics, not just the compliance team.

What Cartel Behaviour and Price-Fixing Actually Look Like

A cartel is simply an agreement or understanding between competing businesses to restrict competition between them. It doesn't need to be written down, signed, or even fully spoken aloud — a nod-and-wink understanding reached over coffee at an industry event counts just as much as a formal contract. The classic forms are:

• Price-fixing — agreeing with a competitor on prices, price increases, discounts, or pricing formulas.
• Market sharing — carving up customers, territories or contracts between competitors so each side has "its" patch.
• Output or capacity restriction — agreeing to limit production, supply or capacity to keep prices higher.
• Bid-rigging — coordinating with a competitor on who will submit the winning tender, or agreeing to submit deliberately uncompetitive "cover bids."

None of these require a boardroom deal. A regional sales manager telling a counterpart at a rival firm "we won't chase your top three accounts if you leave ours alone" is market sharing. A procurement contact who tips off a preferred supplier about a rival's bid, or two suppliers who quietly agree who'll "win" this tender and who'll get the next one, is bid-rigging. Both are treated exactly the same as a formal cartel agreement by the CMA and the CCPC.

Prohibited Information Exchange With Competitors

You don't need an explicit agreement to fall foul of competition law — simply exchanging certain information with a competitor can be enough on its own, because it removes the uncertainty that competition depends on. The categories that carry the highest risk are:

• Current or future pricing, discounts, rebates or pricing strategy
• Costs, margins and profitability
• Bidding intentions or tender strategy
• Capacity, output or production plans
• Customer-specific terms, or plans to enter or exit a market

This risk shows up most often at trade association meetings, industry dinners, supplier days and conferences — settings where competitors are legitimately in the same room, but where the conversation can easily drift into commercially sensitive territory. Even receiving this kind of information passively is dangerous: if a competitor volunteers their pricing plans and you don't object or walk away, you can still be treated as party to the exchange. The safe rule of thumb: if you wouldn't be comfortable with a regulator reading the message back to you, don't send it, and don't sit through it in silence either.

Abuse of a Dominant Position

Competition law doesn't stop a business becoming large or successful — but once a company holds a dominant position in a market (broadly, enough market power to act largely independently of competitors and customers), extra rules apply to how it behaves. Conduct that can amount to an abuse of dominance includes:

• Predatory pricing — pricing deliberately below cost to force smaller rivals out of the market
• Excessive pricing that exploits customers with no realistic alternative
• Exclusive dealing or tying — forcing customers to buy a bundled product, or to deal only with you, as a condition of supply
• Refusing to supply a competitor or customer without objective justification, where that refusal forecloses competition
• Loyalty rebates or discount structures designed to lock out rivals rather than reward genuine efficiency

This is a more specialist area than cartel conduct, but sales and commercial teams at large or market-leading businesses should recognise the warning signs — particularly around discount structures and refusal-to-supply decisions — and flag them to compliance or legal before rolling them out.

The Penalties: What the CMA and CCPC Can Actually Do

The consequences of getting this wrong are severe, for the business and for the individuals involved personally. The figures below are drawn directly from CMA and CCPC published guidance.

Both regulators also run leniency and immunity programmes: the first business or individual to self-report a cartel and cooperate fully can secure full immunity from fines or prosecution, which is exactly why competition investigations so often start with one participant "blowing the whistle" on the others. Getting this wrong sits alongside other serious conduct failures — see Learnsignal's guide to anti-bribery and corruption for how regulators treat comparable commercial misconduct.

Trade Association Meetings: Dos and Don'ts

Trade associations are entirely legitimate and often valuable — for benchmarking, lobbying, standard-setting and industry data. The risk isn't attending; it's what gets discussed once you're there.

• Do ask for and follow a written agenda circulated in advance.
• Do insist that minutes are taken and kept for every meeting.
• Do raise a concern immediately, out loud, if the conversation turns to pricing, bidding or customer allocation.
• Do leave the room and ask for your objection to be minuted if the topic doesn't stop — and follow up in writing afterwards.
• Don't discuss current or future prices, discounts, costs or margins with any competitor, formally or informally.
• Don't assume "everyone does it" or "it's just industry chat" is a defence — it isn't.
• Don't take information away from a meeting (a spreadsheet, a slide, a "just between us" comment) that you wouldn't want read back to you by a regulator.
• Don't wait until after the meeting to raise concerns — silence in the room can be treated as participation.

A Practical Checklist for Sales, Marketing and Procurement

Day-to-day, the rules boil down to a short set of habits:

• Never discuss pricing, margins, bidding plans or customer terms with anyone at a competitor — including on social media, at conferences, or in casual conversation.
• Treat requests for "market intelligence" with caution if they ask for anything more specific than genuinely public information.
• Keep written records professional — assume any email, Slack message or text could be read out in an investigation.
• If a competitor raises a sensitive topic unprompted, say clearly that you won't discuss it, and tell your manager or compliance team afterwards.
• Escalate before you act, not after, whenever a deal, discount structure or trade association proposal feels borderline.

These habits sit well alongside the broader judgement calls covered in Learnsignal's guide to ethical decision-making at work, and the related question of when a personal or commercial relationship needs to be declared — see the guide to managing conflicts of interest for that side of workplace compliance.

Frequently Asked Questions

Do I need to be a manager or director to be personally liable?

No. Both the CMA's criminal cartel offence and the CCPC's criminal enforcement route target individuals directly, regardless of seniority. Anyone who knowingly takes part in price-fixing, market-sharing or bid-rigging can face prosecution and director disqualification, not just the company.

Is it illegal to talk to a competitor at all?

No — plenty of legitimate contact happens between competitors, through trade associations, joint ventures, supplier events and industry benchmarking. The rule is about content, not contact: avoid discussing prices, costs, bids, customers or capacity, and the conversation itself isn't a problem.

What should I do if a competitor brings up pricing in a meeting?

Say clearly that you won't discuss it, make sure that objection is recorded in the minutes, and leave the conversation if it continues. Report what happened to your manager or compliance team as soon as possible afterwards — don't wait to be asked.

What happens if my company reports a cartel it was involved in?

Both the CMA and the CCPC operate leniency and immunity programmes. The first party to come forward with full cooperation can secure immunity from fines or criminal prosecution, which is one reason self-reporting is taken seriously as a live option rather than a last resort.

Competition law risk is manageable once you know what to watch for — but the knowledge needs to be current and consistently applied across every team that deals with competitors, customers or suppliers. Learnsignal's CPD courses build this into a structured, certified programme covering competition law alongside the wider compliance and ethics topics your role requires, so your team isn't relying on guesswork the next time a borderline conversation comes up.