Cover Letter vs Resume: What's the Difference and Do You Need Both?
Should you spend time writing a cover letter, or is a strong resume enough? The answer depends on your industry, the role, and the company.
Resume vs. Cover Letter: The Core Difference
A resume is a structured document listing your qualifications, experience, and skills. A cover letter is a narrative document explaining why you're the right fit for a specific role. They serve different purposes and complement each other.
Think of your resume as a data sheet and your cover letter as a sales pitch. Your resume says what you've done; your cover letter says why it matters for this particular role.
When a Cover Letter Is Essential
Always write a cover letter when: the job posting explicitly asks for one, you're applying to a small company or startup, you have a personal connection or referral, or you're making a career change and need to explain the transition.
In industries like publishing, non-profit, academia, and government, cover letters are almost always expected. Skipping one signals a lack of effort or interest.
When You Can Skip the Cover Letter
Many tech companies, especially for engineering roles, don't require or read cover letters. If an application form doesn't have a cover letter field, it's safe to skip. Same for large-scale job boards where applications are processed in bulk.
That said, when in doubt, include one. A concise, well-written cover letter rarely hurts your candidacy, and it can differentiate you from candidates who didn't bother.
How Resume and Cover Letter Work Together
Your resume and cover letter should tell a cohesive story but not repeat each other. The resume provides the facts (where you worked, what you built, your metrics). The cover letter provides the narrative (why you're excited about this company, how your specific experience maps to their challenges).
Use your cover letter to address things your resume can't: employment gaps, career transitions, your passion for the company's mission, or how a specific project prepared you for this exact role.
Cover Letter Best Practices in 2026
Keep it under 300 words. Open with a hook (not "I'm writing to apply for..."). Show that you've researched the company. Connect your experience to their specific needs. Close with a clear call to action.
Modern cover letters are more conversational than formal. Skip the "Dear Sir/Madam" and "I remain your humble servant." Be professional but personable.