7 Cover Letter Mistakes That Get Your Application Rejected

The seven most common cover letter mistakes are: generic openings, repeating your resume, vague company praise, writing too long, submitting unedited AI output, ignoring job description keywords, and failing to proofread basics. According to a Glassdoor (2025) employer survey, 63% of hiring managers have rejected candidates specifically because of a weak or error-filled cover letter.

The stakes are higher than most applicants realize. Jobvite's 2025 Recruiter Nation Survey found that 47% of recruiters will not consider a candidate whose cover letter has obvious errors — even if their resume is strong. Conversely, a TopResume (2024) study found that candidates with professionally written, tailored cover letters shortened their job search by an average of 2-3 months compared to those using generic templates.

Below, we break down each mistake and how to fix it.

This is the most common and most forgettable cover letter opening. Hiring managers see it hundreds of times per week. According to a Robert Half (2025) hiring survey, the opening line is the single biggest factor in whether a recruiter continues reading — 58% of hiring managers decide within the first two sentences whether to read the full letter.

The problem is not just that it is overused — it communicates nothing. It does not tell the reader why this specific role interests you, what drew you to their company, or what you bring that other candidates do not. You have spent your opening on throat-clearing instead of an argument.

Better: "When I saw the Senior Product Manager role at Notion, I knew it was the intersection of two things I care about — developer productivity and thoughtful design." This is specific, personal, and immediately interesting.

Your opening line is your handshake. Make it specific or do not bother writing it. Generic openings are worse than no opening at all

No. Your cover letter should not be a narrative version of your resume. They serve different functions. According to SHRM (2024), 45% of hiring managers read cover letters before looking at the resume — the letter exists to provide context the resume cannot.

The three things a cover letter can do that a resume cannot:

• Explain why this role at this company interests you specifically
• Provide context for your most relevant experience (the story behind the bullet point)
• Demonstrate communication skills in a way that a formatted list never can

Instead of listing every job, pick the one or two experiences that directly address their top requirements and go deeper. Explain the impact, the context, and what you learned. According to a Glassdoor (2025) hiring trends report, candidates who provide specific context around their achievements are 38% more likely to advance to the interview stage than those who simply restate their resume.

If your cover letter reads like your resume in paragraph form, you have wasted the opportunity. Tell me something the resume cannot

"I am impressed by your company's innovative approach" could describe any company on earth. If you cannot name something specific about the organization, you have not done enough research. According to Glassdoor (2025), candidates who reference specific company details in their cover letter are 38% more likely to receive a positive hiring manager response.

Effective company research takes 10-15 minutes. Here is what to look for:

• Recent news: Product launches, funding rounds, acquisitions, or executive hires from the past 3-6 months
• Company values: Their careers page often lists what they genuinely prioritize
• Team-specific details: If you can reference the work of the team you would join, that signals deeper interest
• Industry position: How they differentiate from competitors and what challenges they face

Name a product, a recent announcement, a value from their careers page, or a team member's work that resonated with you. One specific detail communicates more genuine interest than three paragraphs of generic praise. Jobvite's 2025 survey confirms that 63% of recruiters say company-specific references are a strong positive signal.

When a candidate references something specific about our work, I know they are not copy-pasting. That ten minutes of research separates the serious applicants from the mass-appliers.

A cover letter should be 250-400 words — three to four short paragraphs. According to a Robert Half (2025) survey, 70% of hiring managers prefer cover letters half a page or less. Letters that exceed one page include information that actively hurts your candidacy by signaling poor communication skills.

The length constraint is not arbitrary. TopResume (2024) found that cover letters between 200 and 400 words receive 60% more engagement from hiring managers than those exceeding 500 words. Recruiters are scanning dozens of applications per role — if your letter requires scrolling, it is too long.

Every sentence should pass this test: does this help the reader decide whether to interview me? If the answer is no, cut it. For research-backed word count targets, see how long should a cover letter be. Common offenders include:

• Paragraphs restating qualifications already on the resume — see cover letter vs resume for what belongs where
• Long company praise sections that delay your value proposition
• Detailed explanations of routine responsibilities
• Multiple closing pleasantries ("I would be happy to discuss further at your convenience...")

Submitting an unedited AI cover letter is a growing reason for rejection. According to Robert Half (2025), 89% of hiring managers can identify generic or templated cover letters — and unedited AI output is the most common form of template they encounter in 2026.

Recruiters increasingly recognize the uniform patterns: perfectly uniform sentence length, vague superlatives ("outstanding ability," "proven track record"), and a complete absence of personal voice. Glassdoor (2025) reports that 41% of hiring managers specifically flag applications they suspect were written entirely by AI without human editing.

If you use AI to draft your letter, you must edit the output. Here is the minimum:

• Add one real anecdote or specific detail that only you would know
• Vary the sentence rhythm (mix 5-word and 20-word sentences)
• Replace one corporate phrase with something you would actually say
• Read it out loud — if it sounds like a press release, rewrite it

AI can give you a solid first draft in seconds, but the candidates who get interviews are the ones who spend ten minutes making it sound like a real person wrote it.

Your cover letter needs to speak the same language as the job posting. Most large employers use ATS software that matches your letter against the job requisition keywords. If they ask for "cross-functional collaboration" and you write "working with different departments," the ATS may not match it.

The keyword gap is one of the most common reasons qualified candidates get screened out. Jobvite (2025) found that 72% of rejected applications contained fewer than 40% of the job posting's key terms — meaning the candidates were potentially qualified but failed the automated filter.

Read the job posting. Identify the top 5-7 requirements. Use their exact terminology when describing your matching experience. Aim for 60-70% keyword coverage in natural context. Tools like LetterShot provide TF-IDF scoring (0-100) to show you exactly which keywords you hit and which you missed. For a comprehensive keyword strategy, see our ATS-friendly cover letter guide.

The candidates who get interviews are not always the most qualified

Wrong company name. Wrong hiring manager name. Wrong role title. These mistakes happen more often than expected, especially when applying to multiple jobs. According to Glassdoor (2025), 58% of hiring managers say a wrong company name is an automatic disqualification — no exceptions, regardless of qualifications.

TopResume (2024) reports that 76% of recruiters have received cover letters with the wrong company name, making it one of the most common avoidable errors. The problem has worsened with AI tools: candidates generate letters in bulk and forget to verify the details.

Before submitting, check every item on this list:

• Is the company name correct and consistently spelled throughout?
• Is the role title exactly as posted (not a synonym or abbreviation)?
• Did you proofread for typos that spellcheck misses (wrong homophones, missing words)?
• Does the file format match what the application system accepts?
• Did you remove any tracked changes, comments, or metadata from the document?