Why English proficiency is not enough for senior job positions

Over the past 30 years, our team at the Language Key have noticed the same repeating pattern: A good score on an English proficiency test does not always mean good English at work.

This is because most proficiency tests were not designed for the workplace; rather, built for academic or immigration purposes.

However, for some job positions, a good English proficiency is more than enough, yet for others, it can be the root cause for miscommunication, which costs companies in project delays, wasted time spent on misunderstood tasks, or client deals lost.

English Communication skills do not replace proficiency

Before we can understand which jobs need proficiency and which need skills, it's important to know what the difference between the two is.

Proficiency is mechanics. Vocabulary range. Grammatical accuracy. Pronunciation. Discourse flow. The four things measured on most standardised English tests, including CEFR-based exams like IELTS and TOEFL. Proficiency is the basics. Without it, a sentence does not form. With it, the listener understands.

Communication skills is the layer on top. Once a speaker has the grammar, the next question is whether they can pick the right form for the situation — direct or diplomatic, blunt or soft, casual or formal, simple or layered. We call this 'interactive communication', a new criterion on top of the existing proficiency criteria.

Let's look at an example. John, a sales executive, is closing a client meeting and wants the deal signed today. Watch the same intent move through three skill levels.

• Below proficiency. "I want we sign today." As you can see, the grammar is incorrect.
• At proficiency. "I want us to sign today." Now, the grammar is correct; however, the request is blunt — a buyer hearing it may feel forced.
• With communication skill. "Given everything we have covered, would you be open to signing today, or would you prefer time to take it back to your team?" Same intent. Same outcome wanted. But the request is softened, the buyer's autonomy is acknowledged, and the speaker has built a path to "yes" that does not feel coerced.

All three speakers want the same outcome. Only the third one is most likely to get it.

What roles need Proficiency vs Skills

There is a big difference between an English 'proficient' worker and a skilled worker.

For HR professionals hiring for job positions, it is important not to require such high English standards when the role doesn't even need that 'skill' standard when proficiency is enough.

From our experience at The Language Key, we've distilled which roles are safe to hire based on proficiency alone without massive repercussions, and which roles need 'skills, using the following role gird summary:

The role grid: frequency × stakes

Workplace English needs vary on two axes. Map a role to both axes and the testing priority becomes obvious.

Frequency. How often does the role use English? Daily, weekly, quarterly, rarely.

Stakes. When the role uses English, what is the situation? Sitting and responding when asked, or leading, justifying, clarifying, negotiating?

The four resulting quadrants point to different testing priorities. Below is the grid with representative roles in each.

Reading the four quadrants

Low frequency, low stakes. Back-office accountant. Operations admin. Internal auditor. The role rarely uses English. When it does, the exchange is short, scripted, transactional. Test for solid proficiency: vocabulary, accuracy, pronunciation (band 3). Interactive Communication can sit at band 2. Proficiency carries this role cleanly.

High frequency, low stakes. Hotel receptionist. Retail floor staff. Front-desk concierge. Daily English. Repetitive patterns. The conversations are common — greeting, request, response, closing. Test for proficiency at band 3 or higher: speed, clarity, intelligibility. Interactive Communication still matters at band 3. They need to handle a complaint or a clarification when the conversation moves beyond the script.

Low frequency, high stakes. Technical specialist who presents to a foreign client once a quarter. Investor relations briefer. Expert witness. The role uses English rarely. When it does, the cost of getting it wrong is high. Test for proficiency at band 4: they need to deliver a prepared message accurately. Test for Interactive Communication at band 3 or higher. When the audience challenges them, they need to respond, not freeze.

High frequency, high stakes. Account manager. Business development lead. Senior consultant. Branch HR director. Client services director. English is the medium of work. The conversations are unscripted, multi-stakeholder, high-cost. Test for proficiency at band 4 or 5 across the board. Test for Interactive Communication at band 4 or 5. A candidate at band 5 across the mechanics but band 3 on Interactive Communication is a bad hire for this quadrant.

For lower-level, transactional roles — follow instructions, take a message, read a script — proficiency is enough. The conversation is short, the stakes are low, and a slightly blunt phrasing costs nothing.

For senior roles where the speaker has to negotiate, persuade, defuse, or lead — communication is the difference between an offer accepted and an offer withdrawn. The grammar gets the speaker to the table. The communication layer is what wins the room.

For understanding what the referenced 'bands' mean, check out this blog.

How to use the grid in your hiring

For each open role, ask two questions before you shortlist.

1. How often will this person use English in their day-to-day work?
2. When they use it, what are the stakes? Listening and responding? Or leading, justifying, clarifying, negotiating?

Plot the answer on the grid. Read the minimum band for each criterion. Set that band as the benchmark before you start interviewing.

The risk in skipping this step is real. Without it, hiring managers read every test result against a generic "good English" standard. They reject some candidates for failing the wrong test. They hire others for passing it. Neither outcome matches the role.

Now that you understand what type of English a role needs and its corresponding band, to accurately assess this level during the interview process, read our blog here.