7 Cover Letter Mistakes to Avoid

Mistakes That Undermine Your Cover Letter

A cover letter is your chance to make a strong first impression — but only if it is well-written and thoughtful. The most common cover letter mistakes are easily avoidable, yet they trip up countless job seekers every day. Here are the seven mistakes that cost candidates the most, with clear fixes for each.

Mistake 1: Using a Generic Template

Bad: "I am writing to express my interest in the open position at your company. I believe I would be a great fit because I am a hard worker with strong communication skills."

Good: "When I saw that [Company] is expanding its data analytics platform, I knew my 5 years of building ML-powered recommendation systems were directly relevant. At [Previous Company], I increased user engagement by 35% through a personalized content engine — exactly the kind of impact I want to bring to your team."

The fix: Reference the specific company, role, and a genuine reason you are excited. Generic letters are worse than no letter at all.

Mistake 2: Repeating Your Resume

Your cover letter should complement your resume, not duplicate it. If every sentence could be pulled from your resume bullet points, you are wasting the reader's time.

The fix: Use the cover letter to tell a story your resume cannot. Explain why you want THIS job, share a specific moment that demonstrates your passion, or address a circumstance that needs context (career change, relocation, gap).

Mistake 3: Focusing on What You Want

Bad: "I am looking for a challenging role where I can grow my skills and advance my career."

Good: "Your team's goal of reducing customer churn by 25% this year aligns perfectly with my experience building retention-focused customer success programs. At [Previous Company], I reduced churn from 14% to 7% through proactive health monitoring and strategic QBRs."

The fix: Flip the focus. Instead of what you want from the company, explain what you bring to them. Every sentence should answer the employer's implicit question: "What's in it for us?"

Mistake 4: Being Too Long

A cover letter that runs over one page or exceeds 400 words loses the reader. Hiring managers scan cover letters in about 30 seconds. Dense paragraphs and verbose language work against you.

The fix: Write 250-400 words across 3-4 paragraphs. Every sentence should be essential. Cut filler words, eliminate obvious statements, and get to the point quickly. See our Format Guide for length guidelines.

Mistake 5: Not Proofreading

Spelling errors, grammatical mistakes, or worse — addressing the wrong company by name — are instant disqualifiers. These errors signal carelessness and lack of attention to detail.

The fix:

• Read your cover letter out loud to catch awkward phrasing.
• Use a grammar checker (Grammarly, Hemingway) as a second pass.
• Have a friend review it before submitting.
• Most importantly: make sure you have replaced all company-specific placeholders.

Mistake 6: Starting with "I Am Writing to Apply..."

The most overused opening line in cover letters is "I am writing to express my interest in the [Role] position." It is boring, wastes space, and adds no value. The hiring manager already knows you are applying — that is why they are reading your letter.

The fix: Start with something that grabs attention: a specific achievement, a genuine connection to the company, or a compelling reason you are the right fit.

Weak: "I am writing to apply for the Marketing Manager position."

Strong: "Generating $3.2M in pipeline through a single integrated campaign is the kind of result I want to replicate at [Company]."

Mistake 7: Not Including a Call to Action

A cover letter that trails off without a clear next step leaves the hiring manager without direction. You need to tell them what happens next.

Bad: "I hope to hear from you soon."

Good: "I would welcome the opportunity to discuss how my experience in [specific area] can contribute to [Company]'s goals. I am available for an interview at your convenience and can be reached at [phone] or [email]."

The fix: End every cover letter with a confident, specific call to action that invites the next step and makes it easy for the interviewer to reach you.

The Bottom Line

These seven mistakes are common precisely because they seem minor. But in a competitive job market, the difference between getting an interview and getting filtered out often comes down to these small details. Write a focused, personalized cover letter, proofread it carefully, and you will already be ahead of most candidates. For more guidance, see our Cover Letter Format Guide.