7 Cover Letter Mistakes That Cost You the Interview

I have reviewed thousands of cover letters as a hiring manager and career coach. Most are not bad — they are invisible. They blend into a sea of generic applications that say nothing, prove nothing, and convince no one. The good news: avoiding the common mistakes puts you ahead of 80% of candidates immediately. This guide shows you the seven errors I see most often — and exactly how to fix each one.

Mistake #1: Opening With "I Am Excited to Apply"

This is the most common opening in cover letters — and the most wasted opportunity. "I am excited to apply for [Position] at [Company]" tells the reader nothing they do not already know. Of course you are excited. You applied. Every candidate is excited.

Why it hurts you: Hiring managers spend an average of 7 seconds on the first scan. If your first sentence is generic, they assume the rest is too. You have lost them before they reach paragraph two.

How to fix it: Lead with evidence, not emotion. Open with a specific accomplishment, a relevant insight, or a genuine connection to the company. Compare:

Mistake #2: Repeating Your Resume

Your cover letter is not a prose version of your resume. It is a story that your resume cannot tell. If your cover letter reads like "As you can see from my resume, I have five years of experience in [field]," you are wasting everyone's time.

Why it hurts you: Hiring managers read your resume and cover letter together. Repeating information signals that you have nothing new to add — or worse, that you do not understand the purpose of a cover letter.

How to fix it: Use the cover letter to explain context the resume lacks. Why did you make a career move? What motivated a particular project? How did you overcome a specific challenge? The cover letter is for the "why," not the "what."

Mistake #3: Generic Praise for the Company

"I have always admired [Company]'s commitment to innovation and excellence." This sentence could be written about any company, by any candidate, for any role. It is filler, and hiring managers know it.

Why it hurts you: Generic praise signals generic interest. If you cannot name something specific you admire about the company, the hiring manager assumes you are applying everywhere — which means you are not genuinely interested in this role.

How to fix it: Do 10 minutes of research. Read a recent blog post, product announcement, or company value statement. Then reference it specifically:

Mistake #4: Focusing on What You Want, Not What You Offer

"I am looking for an opportunity to grow my skills in [field] and advance my career." This is about you. Hiring managers care about what you can do for them, not what they can do for you.

Why it hurts you: Companies hire to solve problems, not to provide learning opportunities. Framing the letter around your needs makes you sound entitled and unaware of business realities.

How to fix it: Flip the framing. Instead of "I want to learn X," say "I have done Y, which means I can help you solve Z." Every sentence should answer the question: "Why should this company care?"

Mistake #5: Weak or Nonexistent Call to Action

"I look forward to hearing from you" is not a call to action. It is a resignation. It puts the burden on the hiring manager and gives them no reason to respond.

Why it hurts you: A weak ending leaves the reader with no next step. They finish your letter, think "that was nice," and move on to the next candidate. You have lost the opportunity to drive action.

How to fix it: End with a specific, low-friction ask. Offer value, not just availability:

Mistake #6: Typos and Formatting Errors

This seems obvious, but it happens constantly. A single typo in a cover letter signals carelessness — and in a competitive field, that is enough to eliminate you. One hiring manager told me she rejects candidates who misspell the company name, even if everything else is perfect.

Why it hurts you: Attention to detail is a proxy for professionalism. If you cannot proofread a one-page letter, why should a manager trust you with client communications, code reviews, or financial documents?

How to fix it: Read your letter out loud. Use Grammarly or a similar tool. Then ask a friend to review it. Fresh eyes catch what yours miss. And always, always double-check the spelling of the company name and the hiring manager's name.

Mistake #7: Writing a Novel

The ideal cover letter is 250-400 words. If yours is longer than one page, it will not get read. Hiring managers are busy. They scan, they do not study. A dense, multi-page letter signals that you do not respect their time — or that you cannot prioritize.

Why it hurts you: Long letters get skimmed or skipped entirely. Your best points might be on page two — which means they will never be seen.

How to fix it: Write your first draft without worrying about length. Then cut 30%. Remove adjectives, adverbs, and anything that does not directly support your core argument. If a sentence does not advance your case, delete it.

The Cover Letter Checklist

Before you send any cover letter, run through this checklist:

Frequently Asked Questions