Cover Letter Optional? Here's When to Write One Anyway

Photo by Olha Vilkha on Unsplash

You're three fields into an application when you hit it: "Cover letter (optional)." Your cursor hovers over the upload button for a second too long. Skipping it would save you twenty minutes. Writing one might do nothing at all — or it might be the exact thing that gets your resume actually read. The honest answer is that "optional" doesn't mean the same thing for every applicant, and the right move depends less on the word itself and more on which one of a few common situations you're actually in.

What "optional" really signals

When a job posting marks the cover letter field optional, it usually means one of two things: the employer doesn't weight it heavily in their screening process, or their applicant tracking system just makes every field technically skippable regardless of what the hiring team actually wants. You can't tell which one you're looking at from the form alone, so the safer assumption is the second one — that a human might still read whatever you submit.

A widely cited ResumeGo survey found that only about 26% of recruiters say they'd deduct points from a candidate who skips an optional cover letter `[NEEDS SOURCE: exact 26% figure and survey methodology — cited secondhand via The Muse, original ResumeGo study not independently verified]`. That number cuts both ways: it means most recruiters won't penalize you for skipping it, but it also means roughly a quarter will notice — and you don't know in advance which quarter you're applying to.

The scenario table

Rather than treating "should I write one" as a single yes-or-no question, run your situation through this table first.

| Your situation | Write one? | Why | |---|---|---| | You have a referral or internal contact | Yes | Name them in the first line. It's the single highest-leverage sentence you can write in any application, and skipping the letter means skipping that leverage entirely. | | You're changing careers or industries | Yes | Your resume shows what you did. It can't explain why you're doing something different now, or why your last five years are actually relevant to this one. A cover letter can. | | You're quick-applying to 15+ roles this week | Usually skip | A generic letter written in two minutes reads as generic in two seconds. If you can't tailor it, a strong resume alone beats a templated letter that repeats your resume in paragraph form. | | You have an employment gap or nonlinear path | Yes | This is the one place you control the narrative before anyone starts guessing. One clean paragraph beats a hiring manager's imagination every time. | | The role is genuinely competitive or a reach | Yes | If a hundred similarly qualified people apply, the one who explained why they specifically want this job stands out from the ninety-nine who didn't bother. | | The posting explicitly says "do not include a cover letter" | No | Follow the instruction. Submitting one anyway signals you don't read directions, which is a worse look than having no letter at all. |

Notice the pattern: write one when there's something a bare resume genuinely can't say — a connection, a pivot, a gap, a reason you specifically want this job and not just any job. Skip it when you have nothing to add beyond "please consider my resume," because that sentence isn't worth anyone's reading time, including yours.

Referral case: use it to name-drop, not repeat yourself

If someone on the inside told you to apply, that's the entire point of your cover letter — don't bury it. Marcus, a product manager candidate who'd worked with a current employee of the company on a previous team, opened his optional cover letter with one sentence: "Priya Chen, who I worked with at Instacart, suggested I apply for this role and thought my experience scaling onboarding flows would be relevant to your team." That's it for the opening. Everything after that sentence exists to back it up in two or three more sentences, not to restate his resume top to bottom.

If you skip the letter entirely in a referral situation, you're relying on your contact to have already mentioned you by name to the hiring manager — which they might not have, especially at a larger company where the referral just drops a name into an internal system. Don't assume the connection speaks for itself. Say it yourself, in writing, where the hiring manager will actually see it.

Career-change case: connect the dots your resume can't

A resume lists what you did. It doesn't explain why a marketing coordinator with six years of consumer brand experience is applying for a UX research role, and a hiring manager skimming that resume cold might just assume it's a mismatch and move on. That's exactly the gap a cover letter closes.

Keep it to two ideas: what specifically drew you to this shift (not "I've always been passionate about UX" — something concrete, like the user interviews you ran informally as part of your old job and realized you liked more than the marketing itself), and one transferable skill with a real example attached. Don't apologize for the pivot or over-explain it. State it plainly, back it with one piece of evidence, and move on. If you haven't sorted out which parts of your old career actually transfer yet, our 3-tier framework for career-change resumes is worth doing before you write the letter, not after — the same Tier 1 skill that anchors your resume summary is usually the strongest thing to lead the cover letter with too.

Quick-apply case: when skipping is the right call

If you're applying to a high volume of similar roles in a short window — say, fifteen warehouse or entry-level retail postings in a week — writing a fresh, specific cover letter for each one isn't realistic, and a copy-pasted one is worse than nothing. Recruiters who read a lot of applications recognize a template instantly: vague company praise, no specific role details, a closing line that could slot into any letter for any job. That reads as less effort than submitting no letter at all, because it signals you didn't even bother to personalize the one thing meant to be personal.

In this scenario, put your energy into the resume instead. Make sure it's tailored with the actual keywords from each posting and that your most relevant experience is in the first few lines, since that's genuinely what's getting read in a quick-apply pipeline. If one specific role on your list stands out — better pay, a company you actually admire, a step up rather than a lateral move — pull that one out and give it the fifteen minutes a real cover letter takes. You don't have to treat every application the same way just because the form looks the same.

The one-line version, if you're still unsure

If you've read this far and still aren't sure which bucket you're in, ask one question: is there something true about my situation that a resume alone can't say? If yes — a referral, a pivot, a gap, genuine enthusiasm you can back up with specifics — write the letter, even though it's optional. If the honest answer is "no, I just want to apply faster," skip it and put that time into making your resume sharper instead. Either way, that's a decision made on purpose, not a field left blank because filling it out felt like one more chore in an already exhausting search.

Whichever way you land on the cover letter, the resume is doing the heavier lifting — the closing line at the bottom of the page deserves the same scrutiny; if it currently reads "references available upon request," that space could be doing more for you. Simple CV's builder makes it easy to keep your resume sharp and tailor it quickly, so it's ready whenever a role is actually worth the extra fifteen minutes.