Quick answer: Which English grammar mistakes matter at work?
- Writing score — Indian adults score 504 in writing on EF EPI 2025, above the 484 national average.
- High-impact errors — tenses, articles, prepositions, agreement, run-ons (editorial).
- Writing jobs — content writers report ₹3.9–4.3 lakh; technical writers ₹8.1–8.9 lakh (AmbitionBox).
- Where it shows — CVs, emails, reports and written tests.
- Proof — a free 20-minute English Grammar test.
Key takeaways
- Fix your repeated errors.
- Tenses show time clearly.
- Articles are small but visible.
- Short sentences reduce errors.
- Proofread everything important.
Picture a hiring manager screening fifty applications for an analyst role. Two candidates have similar experience. One cover note begins, "I am having 3 years experience in data analysis and I am interested for this role." The other: "I have three years of experience in data analysis and I'm excited about this role." The manager knows both candidates can probably do the work. But the second application looks careful — and in a job full of client reports, care matters. The first candidate is skipped before anyone reads the rest.

What workplace grammar involves
Workplace grammar isn't about rare rules. It's about a short list of errors that appear again and again in CVs, emails, chats and reports, and that make writing unclear or look careless. The main ones are verb tenses; articles (a, an, the); prepositions (in, on, at, for); subject-verb agreement; countable and uncountable nouns; word order in questions; and run-on sentences that join several ideas without punctuation.
India's adults are stronger at writing than listening: EF's English Proficiency Index 2025 gives India a writing score of 504, against a national average of 484.1 But repeated small errors still stand out to employers. Grammar matters most in jobs that live on writing — AmbitionBox lists content writers at a typical ₹3.9–4.3 lakh and technical writers at ₹8.1–8.9 lakh.23 At B2 on the Council of Europe's CEFR scale, users "produce clear, detailed text"; at C1, "well-structured" text with controlled use of organisational patterns.4
- India's EF EPI writing score
- 504
- Typical content writer pay (AmbitionBox)
- ₹3.9–4.3 lakh
- Typical technical writer pay (AmbitionBox)
- ₹8.1–8.9 lakh
- High-impact error types to fix first (editorial)
- 5
How employers check grammar
| Stage | What happens | What they notice |
|---|---|---|
| CV and cover note | First impression | Repeated errors |
| Online test | Grammar MCQs | Rules |
| Writing task | Email or summary | Accuracy in context |
| Interview | Spoken grammar | Tense and agreement |
| On the job | Emails and reports | Consistency |
Table: How employers check grammar (editorial summary)
What employers look for

Correct tenses
Time is clear.
Articles
A, an, the used naturally.
Prepositions
In, on, at, for.
Agreement
Subjects and verbs match.
Sentence control
One idea per sentence.
Proofreading
Few careless errors.
Worked example: common errors and fixes
| Error | Correct |
|---|---|
| "I am having 3 years experience." | "I have three years of experience." |
| "Please revert back." | "Please reply." |
| "He don't agree." | "He doesn't agree." |
| "I am interested for this role." | "I'm interested in this role." |
| "Discuss about the plan." | "Discuss the plan." |
| "Give me an information." | "Give me some information." |
Table: Common workplace grammar errors (illustrative)
Tenses at work
| Tense | Use | Example |
|---|---|---|
| Present simple | Facts and routines | "I manage three accounts." |
| Present continuous | Happening now | "I'm working on the report." |
| Past simple | Finished time | "I joined in 2023." |
| Present perfect | Experience or recent result | "I've completed the analysis." |
| Future (will/going to) | Plans and promises | "I'll send it tomorrow." |
Table: Tenses at work (editorial)
Proof checklist

- A list of your five most frequent errors
- A proofread CV and cover note
- Three work emails rewritten correctly
- Practice with tenses and articles
- A habit of reading aloud before sending
- A verified English Grammar certificate
Your CV
Check every line for tense consistency (past tense for past roles), articles and prepositions. Ask someone with strong English to review it. One typo can undo a strong profile.
Interview questions, with how to answer them
"Can you correct this sentence?"
Read it carefully, fix the error and explain the rule briefly.
"Write a short email to a client about a delay."
Clear subject, apology, reason, new date, polite close — then proofread.
"How do you make sure your writing is accurate?"
Short sentences, a checklist of your usual errors, reading aloud and tools.
"Tell us about your last project." (spoken)
Use past simple for finished work and present perfect for results.
"What's the difference between 'fewer' and 'less'?"
Fewer for countable nouns, less for uncountable.
Questions to ask in your interview
- "Is there a style guide?" — standards.
- "Who reviews written work?" — feedback.
- "What writing do I do most?" — focus.
- "Which tools are used?" — support.
Indian English expressions to adjust for global audiences
| Common in India | Clearer globally |
|---|---|
| "Do the needful." | "Please approve the request." |
| "Revert back." | "Reply." |
| "Prepone the meeting." | "Move the meeting earlier." |
| "Kindly adjust." | "Please let me know if this works." |
| "Out of station." | "Away / travelling." |
Table: Adjusting Indian English for global readers (editorial; these are valid in India)
A three-week plan

- Week 1: Find your errors — Review ten of your emails and list repeated mistakes.
- Week 2: Fix the top five — Learn the rule and write examples for each.
- Week 3: Prove it — Take the English Grammar Test.
Related: English Vocabulary, Professional Email & Workplace Writing and Business Writing. Guides: English vocabulary, professional email writing and business writing.
How grammar shows up day to day
- Emails — every message.
- Chats — quick but visible.
- Reports — read by managers.
- Tickets — clear problem descriptions.
- Presentations — slide text.
- Speech — tenses in meetings.
More questions interviewers ask
"When do you use 'since' and 'for'?"
Since with a point in time (since 2023); for with a duration (for three years).
"What's a run-on sentence?"
Two or more sentences joined without proper punctuation or connectors.
Your first 90 days
| Period | Focus | What good looks like |
|---|---|---|
| Days 1–30 | Learn templates and style | Accurate routine emails |
| Days 31–60 | Fix repeated errors | Fewer corrections |
| Days 61–90 | Write longer documents | Clean reports |
Table: A first-90-days plan (editorial guidance)
Use team templates in the first month. Ask a colleague to mark patterns in your writing. By the third month, produce reports that need little editing.
Could you pass the English Grammar Test today?
Hiring managers test judgement with scenarios like this one. Answer it before you open the explanation — the certification has 20 of them, 20 minutes, 70% to pass.
Show the answer
A. —
- 01Tenses
- 02Articles & Prepositions
- 03Agreement & Sentence Structure
- 04Common Errors
Free, no sign-up. Pass and you become a English Grammar Certificate, with a credential ID employers can verify. Every answer is explained either way.
How AI is changing grammar at work
Grammar checkers and AI assistants now fix most surface errors instantly. That raises expectations: careless mistakes look worse because they're easy to avoid. But tools can change meaning or tone, so you still need enough grammar to judge their suggestions.
How to proofread effectively
Wait before rereading. Read aloud slowly. Check one thing at a time — names, numbers, then tenses. Use a grammar tool as a second check, not the first.
How to use articles correctly
Ask: is this one of many (a/an), a specific one we both know (the), or a general idea (no article)? Practise with your own sentences rather than rules alone.
How to avoid run-on sentences
Keep one idea per sentence. Use full stops more often. Connect related ideas with "and", "but" or "because", not commas alone.
How to learn grammar without textbooks
Read well-edited writing in your field — industry newsletters, company blogs, documentation. Notice how writers use tenses and articles. Copy useful sentence patterns into a notebook and reuse them in your own emails. Grammar learned in context sticks better than rules memorised alone.
Common myths about grammar
"Grammar tools make grammar irrelevant." You still need to judge them.
"Complex sentences sound smarter." Simple sentences are clearer.
"Spoken grammar doesn't matter." Interviewers notice it.
How to use the present perfect correctly
Many learners overuse or avoid the present perfect. Use it for experience without a specific time ("I have worked with US clients"), for recent results that matter now ("I've finished the report") and with "since" or "for" for situations that continue ("I've led the team since 2024"). Use the past simple when you mention a finished time ("I finished the report yesterday"). On CVs and in interviews, this difference makes your English sound accurate and natural.
How to write sentences that are hard to get wrong
Keep the subject and verb close together and near the start of the sentence. Use one main idea per sentence. Prefer active voice: "The team approved the budget" rather than "The budget was approved by the team". Avoid stacking several clauses with commas. Short, active sentences reduce grammar errors and are easier for international readers to understand.
How to fix grammar in spoken English
Spoken errors matter in interviews and calls. Record yourself describing your last project and listen for repeated mistakes, often with tenses, articles or third-person 's'. Choose one error to fix each week and practise correct sentences aloud until they feel natural. Slow down slightly when speaking; many spoken errors come from rushing rather than not knowing the rule.
How to use countable and uncountable nouns
Some common work words are uncountable in English: information, advice, feedback, equipment, software and furniture. Say "some information" or "a piece of advice", not "an information" or "advices". Learn the uncountable words used most in your field and check new nouns in a dictionary.
How to check grammar in a CV
Use past tense for previous roles and present tense for your current role. Start bullet points with action verbs, keep them parallel in form and remove personal pronouns. Read it aloud once, line by line.
Mistakes that cost candidates
- Errors on the CV.
- Inconsistent tenses.
- Overlong sentences.
- Not proofreading.
- Blindly accepting tool suggestions.
How we know
Writing skill data come from the EF English Proficiency Index 2025; India pay from AmbitionBox (read October 2026); and level descriptions from the Council of Europe's CEFR. The hiring scene and error tables are editorial and illustrative; Indian English expressions are valid locally and are flagged only for global readers. Science of Apps publishes the free test linked here. Last reviewed October 2026.
Key terms, defined
- Tense — verb form showing time.
- Article — a, an, the.
- Preposition — words like in, on, at.
- Subject-verb agreement — matching verb to subject.
- Run-on sentence — sentences joined without proper punctuation.
Frequently asked questions
Which grammar mistakes do employers notice most?
Errors in CVs and emails: wrong tenses, missing or wrong articles, prepositions, subject-verb agreement and long run-on sentences.
When do I use 'a', 'an' and 'the'?
Use 'a/an' for one non-specific thing (a meeting) and 'the' for something specific or already mentioned (the meeting at 3 p.m.).
Present perfect or past simple?
Use past simple for finished time (I joined in 2023) and present perfect for experience or recent results without a time (I have worked with US clients).
Is 'do the needful' correct?
It's understood in India but sounds unusual elsewhere; say exactly what you need instead.
Do grammar tools fix everything?
No. They catch many errors but miss meaning, tone and context — always reread.
Is this test accepted for exams or visas?
No. It's a free skills credential for your CV, not a proctored exam.
Sources
- EF English Proficiency Index 2025 — India
- AmbitionBox — Content Writer salaries in India (read October 2026)
- AmbitionBox — Technical Writer salaries in India (read October 2026)
- Council of Europe — CEFR global scale (Table 1)
- Checked October 28, 2026. Figures that change — fees, salaries, prices — are reviewed every six months; if something is out of date, tell us.
Certifications to take next
- English Grammar Test — the free 20-minute test
- Professional email writing guide — writing at work
- English vocabulary guide — the right words
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- Free certification · LanguagesEnglish Level TestA free, CEFR-aligned English level test: grammar, vocabulary, reading and listening from A1 to C2, with a certificate that states your level for your CV, LinkedIn and job applications.
- Free certification · LanguagesSpoken English TestA free Spoken English test: everyday conversation, listening & understanding, natural phrases & idioms and pronunciation & stress, with a verifiable certificate for your CV, LinkedIn and job applications.
- Free certification · LanguagesBusiness English TestA free Business English test: emails & writing, meetings & negotiation, business vocabulary, reading workplace texts and listening at work, with a verifiable certificate for your CV, LinkedIn and job applications.
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