Common Resume Grammar Mistakes Hiring Managers Notice First in 2026

Hiring managers spend an average of 7 seconds on an initial resume scan. In those 7 seconds certain grammar and formatting errors jump out immediately — not because the hiring manager is looking for them but because they break the visual flow of a document that should be clean and consistent.

These are the errors that get noticed first, what they signal, and exactly how to fix each one.

Error 1: Inconsistent Verb Tense

What it looks like:

Sales Manager, TechCorp (2022-2024)
- Managed a team of 8 sales representatives
- Develops quarterly territory plans
- Led company to 140% of annual revenue target

The second bullet switches from past tense to present tense for a role that ended in 2024.

Why it gets noticed: Tense inconsistency is one of the first errors trained hiring managers spot because it suggests the resume was assembled from multiple sources without thorough review — different bullet points written at different times and never reconciled.

The rule:

• Current role: present tense (manage, develop, lead)
• All previous roles: past tense (managed, developed, led)

Apply this consistently throughout the entire resume. Go through every bullet point in every role and verify the tense matches whether the role is current or past.

Error 2: Apostrophe Misuse

What it looks like: "Improved team's productivity by 40%" ✅ Correct

"Improved teams productivity by 40%" ❌ Missing apostrophe

"Improved team's productivity" vs "Improved teams productivity" — the first shows possession (the productivity belonging to the team). The second is an error.

The more common version: Using an apostrophe to make a word plural. "Managed 5 project's" — the apostrophe here is wrong. The plural of project is simply "projects" not "project's."

The rule:

• Apostrophe + s shows possession (the team's results, the client's feedback)
• Apostrophe shows contraction (it's = it is, don't = do not)
• Apostrophe never makes a word plural

Why it matters: Apostrophe errors are considered basic punctuation literacy. In roles requiring written communication they signal a skill gap.

Error 3: Their, There, They're Confusion

What it looks like: "Worked with there team to deliver the project" (should be "their team")

"Improved they're workflow" (should be "their workflow")

The rule:

• Their = belonging to them (their team, their results, their clients)
• There = a place or pointing to something (worked there, there was a problem)
• They're = they are (they're responsible, they're a strong team)

Why it gets noticed: This error is considered one of the most visible writing errors because it involves confusing three words with completely different meanings. It signals either a lack of grammar knowledge or extreme carelessness in proofreading.

Error 4: Inconsistent Formatting of Numbers

What it looks like: "Managed a team of eight people and increased sales by 40%"

The inconsistency: numbers 1-9 are typically written as words (eight) while larger numbers or percentages are written as digits (40%). Having both conventions in the same bullet point looks inconsistent.

More common version: Inconsistency throughout the resume with no clear rule applied:

• "Managed 3 projects"
• "Led a team of fifteen"
• "Achieved 250% of quota"

The rule: Pick one convention and apply it consistently:

• Option A: Spell out numbers under 10, use digits for 10 and above (most common for resumes)
• Option B: Use digits for all numbers including percentages

Whichever you choose apply it consistently throughout the entire document.

Error 5: Bullet Points That Start With Different Grammatical Structures

What it looks like:

- Managed a team of 8 people
- Revenue increased by 40%
- Implementing new CRM system
- Led cross-functional projects

Four different grammatical structures: past tense verb, subject-first, present participle, past tense verb.

Why it gets noticed: Resume bullet points should be parallel — they should all start with the same type of word in the same form. When they do not the list looks fragmented and hard to read.

The rule: All bullet points in a role should start with a past tense action verb (for past roles) or present tense action verb (for current role). Remove the subject and articles from the beginning of bullets.

Correct:

- Managed a team of 8 sales representatives
- Increased revenue by 40% year over year
- Implemented a new CRM system across 3 departments
- Led cross-functional projects with engineering and marketing

All start with past tense verbs. All in parallel structure.

Error 6: Comma Splices

What it looks like: "Managed the sales team, increased revenue by 40%"

This joins two complete sentences with just a comma. It is called a comma splice and it is incorrect.

Why it matters: Comma splices are a common grammar error that hiring managers in communication-heavy roles notice immediately.

The fixes: Option A: Separate into two bullet points (usually best on a resume) Option B: Use a semicolon instead of a comma Option C: Use a conjunction

On resumes the cleanest fix is usually to separate into distinct bullet points rather than combining multiple achievements into one sentence.

Error 7: Capitalization Inconsistency

What it looks like:

- Managed the Sales team and marketing department
- Worked with the CEO and vp of engineering

Inconsistent capitalization of job titles and team names.

The rule: When a title comes directly before a name capitalize it (CEO John Smith). When referring to a role generically use lowercase (the vice president of engineering). Apply this consistently throughout.

More commonly: inconsistency between how you capitalize the same term in different places. If you capitalize "Sales Team" in one place do not write "sales team" in another.

Error 8: Using Passive Voice Throughout

What it looks like: "A new onboarding process was implemented by the team"

Rather than: "Led the team to implement a new onboarding process"

Why it gets noticed: Resumes should demonstrate what you did. Passive voice obscures who did what and makes your contributions unclear. It also adds words unnecessarily.

The fix: Use active voice. You are the subject. You did the things. Make that clear.

Before: "The project was completed ahead of schedule" After: "Delivered the project two weeks ahead of schedule"

This is simultaneously better grammar and more compelling content.

How to Catch These Errors Efficiently

The fastest approach:

1. Copy your resume text into Textora's free grammar checker. It catches tense inconsistencies, apostrophe errors, their/there/they're confusion, comma splices, and explains each correction clearly.

Check Your Resume Free

1. After the grammar check do a manual read specifically looking for:

   • Inconsistent number formatting
   • Non-parallel bullet point structures
   • Capitalization consistency

2. Read the full resume aloud once. Your ear catches the errors your eye misses.

This process takes under 15 minutes and removes the errors most likely to cause a bad first impression.

Frequently Asked Questions

What is the most common grammar mistake on resumes? Inconsistent verb tense — using present tense for past roles or mixing tenses within the same role's bullet points. Second most common is apostrophe misuse.

Do grammar errors really cause rejection? In communication-heavy roles yes, often. In technical roles a single minor error is usually not disqualifying. The risk varies by industry and role — but there is no upside to having errors, so fix them regardless.

How do I check my resume grammar without Grammarly? Textora's free grammar checker is a direct alternative with no account required and no word limits. It explains each correction in plain English which is more useful for learning than just seeing the corrected version.

Check Your Resume Grammar Free

Is passive voice always wrong on a resume? Not always — but active voice is almost always stronger. If you find yourself using passive voice it is usually because the subject (you) is missing. Put yourself back in the sentence.

How many times should I proofread my resume? At least three times: once reading normally, once reading aloud, and once after at least a few hours away from it. Fresh eyes catch errors that tired ones miss. Running a grammar checker counts as one pass but does not replace the human review.

Conclusion

The grammar mistakes that get noticed first on resumes are all preventable: inconsistent tense, apostrophe errors, their/there/they're confusion, number formatting inconsistency, non-parallel bullet points, comma splices, capitalization inconsistency, and passive voice.

A grammar checker catches most of these automatically. A careful manual review catches the rest.

The 15 minutes it takes to proofread your resume properly is one of the highest-return investments in your job search.

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