Quick answer: Cover letters are necessary when the job ad or application form asks for one, and strongly worth sending when you're changing careers, relocating, explaining a gap, applying to a small company or responding to a referral. When the letter is optional, send a short tailored one if you can. Skip it only when the employer says not to, or there's truly nowhere to put it.
Are cover letters necessary? It's one of the most common questions job seekers ask, because the honest answer is "it depends," and nobody wants to spend 30 minutes on a letter that never gets opened.
This guide replaces "it depends" with a clear decision guide. You'll see which situations make a cover letter mandatory, which make it worth the effort even when it's optional, when it's fine to skip, what to do when an application portal has no place to put one, and a short-letter format for when you're applying to a lot of jobs.
Are cover letters necessary? The short rule
Send one when:
- The employer asks for it. If the ad or form says "cover letter required," it's not optional, and a missing letter can end your application.
- It's optional and you can tailor it. A specific, one-page letter can only help.
- Your resume needs context. Career changes, relocations, gaps, a referral or a stretch application all benefit from a few sentences of explanation.
Skip it when:
- The employer says not to. Some ads say "no cover letters" or "resume only." Respect that.
- There's genuinely nowhere to put it and no recruiter email to send it to.
- You can only send a generic letter. A copy-paste letter with the wrong company name does more harm than none.
What do career services advise?
University and government career services are consistent: send one by default.
- The UK's National Careers Service says: "You should always include a cover letter when you apply for a job using a CV" (National Careers Service).
- Prospects, the UK graduate careers site, says: "Applications should always include a cover letter unless the job advert advises you differently" (Prospects).
- Harvard's career office describes the letter as "a writing sample and a part of the screening process" (Harvard FAS Career Services).
What about recruiter surveys? You'll find many headline figures online claiming that a certain percentage of recruiters read or ignore cover letters. Most come from small online polls run by companies selling resume or cover letter services, with methods that aren't published, so we don't quote them here. The practical reality is simpler: readers vary, and you rarely know which kind you'll get.
Decision guide: should you send a cover letter in your situation?
| Your situation | Send a cover letter? | Why |
|---|---|---|
| Job ad or form says it's required | Yes, always | Missing required documents can disqualify you |
| Form has an optional cover letter field | Yes, if you can tailor it | Helps with any reader who opens it; costs a few minutes |
| Ad says "no cover letters" or "resume only" | No | Following instructions is part of the test |
| Changing careers | Yes | Explains why your background fits a new field |
| Relocating to a new city or country | Yes | Answers "why here?" and states availability and work authorization |
| Explaining an employment gap | Yes, briefly | One sentence of context prevents assumptions |
| Applying to a small company or startup | Yes | Often read by the founder or hiring manager directly |
| Referred by someone at the company | Yes, short | Name the referrer in the first line |
| Applying by email | Yes, as the email body | The email itself is your cover letter |
| Mass applications to similar roles | Short version | A tailored 150-word letter beats a generic long one |
| Internal transfer or promotion | Usually a short note | Your manager and HR already know your record |
| Academic, government or nonprofit roles | Yes | Often required, sometimes with specific criteria to address |
| Recruiter or agency submits you | Usually not | The recruiter writes the introduction; ask them |
When is a cover letter most valuable?
Your resume shows what you've done. A cover letter is the only place to explain things a resume can't. That makes it most valuable in four situations.
Career changes
A resume full of teaching jobs doesn't explain why you're applying for a training coordinator role. The letter does.
After eight years teaching secondary science, I've spent the last two designing staff training for my school, including a digital skills program now used by 60 teachers. I'm applying for your Learning and Development Coordinator role because it lets me do that work full time.
Relocation and international applications
Employers abroad want to know why you're applying from elsewhere, when you can start and whether you can legally work there.
I'm relocating to Dubai in January with my family and hold a residence visa, so I can start after my one-month notice period without sponsorship.
Gaps and non-linear careers
One calm sentence is enough:
After a year caring for a family member, I completed a Power BI certification and am returning to full-time analytics work.
Small employers and referrals
At a small firm, the person reading your application may be the person you'd work for. A letter that shows you understand their business is often what moves you from "maybe" to "call."
What if the application portal has no cover letter upload?
Many online forms only accept a resume. You still have options:
- Look for a free-text box. Fields like "Additional information," "Message to the hiring team" or "Why are you interested?" can hold a short version of your letter.
- Check for an "other documents" upload. Some forms have a generic attachment field.
- Email the recruiter or hiring manager after applying, if the ad lists a contact. Keep it to a short note with your letter attached.
- Don't merge it into your resume unless there's only one upload field and the ad asks for both documents. In that case, put the letter first in a single PDF.
- Don't force it. If there's no field and no contact, a well-tailored resume does the job alone.
The short cover letter: a fast alternative
When you're applying to many similar jobs, a short letter of 150–200 words is a practical middle ground. It fits in a text box or an email and still shows you've read the ad.
Dear Hiring Team,
I'm applying for the Customer Success Manager role at Northwind. Your ad asks for someone who can reduce churn in mid-market accounts, and that's what I've done for the last three years at Fieldpoint, where I managed 45 accounts worth USD 2.3M a year and kept annual retention above 92%.
I'd bring the same structured onboarding and quarterly business reviews to your team, along with hands-on Salesforce and Gainsight experience.
My resume is attached. I'd welcome the chance to talk about how I could help your customers renew and grow.
Kind regards,
Amira Hassan
Three paragraphs: the role and your strongest match, what you'd bring, and a clear close. For the full method, see our guide to writing a cover letter that gets read, and for how the letter and resume divide the work, read cover letter vs resume.
Does it depend on the country?
Yes. Expectations vary, so check the job ad first.
| Region | Typical expectation |
|---|---|
| UK and Ireland | Expected by default with a CV |
| United States and Canada | Often optional in online portals; expected for many professional, academic and nonprofit roles |
| Germany and much of Europe | A tailored letter is commonly expected, sometimes called a motivation letter |
| Australia | Commonly expected, sometimes with responses to selection criteria |
| UAE, Saudi Arabia, Qatar | Often a short email message or optional upload; state visa status and notice period |
| India and Pakistan | Often the email body; a formal letter is common for senior and multinational roles |
Common mistakes
- Writing "Please see my resume" in a required field. It reads as unwilling.
- Sending the same letter to every employer. Generic letters are easy to spot.
- Repeating the resume line by line. The letter should add context, not duplicate.
- Going over one page. If it doesn't fit, cut the weakest paragraph.
- Wrong company or job title. The most damaging and most common copy-paste error.
- Ignoring "no cover letters" instructions. It suggests you didn't read the ad.
Build it in EZProCV
When a letter is worth sending, the cover letter builder lets you write it with a live preview that matches the downloaded file, choose from cover letter templates that match your resume's design, and download a text-based PDF free or share it as a link. For wording ideas, browse the cover letter examples by job.
Sources
- National Careers Service: How to write a cover letter
- Prospects: Cover letters
- Harvard FAS Career Services: Create impactful resumes and cover letters
- MIT CAPD: How to write an effective cover letter
Frequently asked questions
Do recruiters actually read cover letters?
Some read every one, some read them only for shortlisted candidates, and some skip them. You can't know in advance which reader you'll get. That's why a short, tailored letter is the safe choice when there's a place to submit it: it costs a few minutes and helps with any reader who does open it, especially the hiring manager deciding between close candidates.
Is it bad to send a cover letter when it says optional?
No. "Optional" means you won't be rejected for leaving it out, not that you shouldn't send one. A tailored letter in an optional field can only help if it's well written. The one exception is a generic, error-filled letter, which can hurt more than sending nothing, so if you can't tailor it, skip it.
Can a cover letter hurt my application?
Yes, if it's generic, addressed to the wrong company, full of errors or longer than a page. Harvard's career office calls the letter "a writing sample," so mistakes in it are judged like mistakes in your work. Read it aloud before sending and check that the company name and job title are right everywhere.
Do I need a cover letter for an internship or graduate job?
Usually yes. With little work history, your resume can't show much about your motivation or fit, and many internship and graduate programs ask for a letter or a written statement. Use it to connect your coursework, projects and part-time jobs to the role, and explain why you want that organization specifically.
Are cover letters necessary for jobs in the Gulf?
A separate formal letter is less often required in the UAE, Saudi Arabia and Qatar than in the UK, but a short message is still expected when you apply by email or through a recruiter. Use it to state the role, your strongest match, your visa status and your notice period, which Gulf employers commonly want to know upfront.
