How to write a cover letter someone will actually read

Does anyone read it?

Practice varies by employer, role, and how many applications a posting receives. Some hiring managers read every cover letter closely, especially for roles where writing itself is part of the job, or for smaller teams hiring directly. Others skim it only if the resume already looks promising, or skip it when volume is high and the posting marks it optional.

The practical takeaway is not to guess whether this specific reader will open it. It is to write one worth reading when it is required or clearly welcomed, and to spend that effort where it counts, on roles you actually want, rather than producing a generic version for every application.

The four paragraphs that do the work

• Opening: who you are and why this role, specifically, in one or two sentences.
• Proof: one real example that backs up your fit, told with enough detail to be believable.
• Context: what you know about the team or the work that shows you read the posting, not a template.
• Close: a plain, confident line about wanting the conversation, no restated resume summary.

A cover letter following this shape rarely needs to run past three-quarters of a page. Length is not the signal of effort; specificity is.

An opening that is not 'I am writing to apply'

The subject line and the posting itself already say what role you are applying for; restating it in the first sentence uses your best real estate on the one fact the reader already has. A stronger opening states the actual connection: 'I have spent six years running electrical service calls for residential and light commercial clients, and your posting for a lead technician who can also mentor apprentices is close to work I am already doing.'

Proving one claim instead of listing five

A cover letter that lists five strengths in five sentences reads like a weaker copy of the resume above it. One real story, told with a specific detail, does more work: what the situation was, what you actually did, and what happened, in three or four sentences, not a full page.

Pick the claim that matters most for this posting specifically, not the story you are most proud of in general. The two are not always the same one.

Writing it when you are changing fields

When your job titles do not make the connection obvious, the cover letter is the place to make it explicit rather than hoping the resume implies it. Name the transferable skill directly, and back it with one concrete example, rather than a general claim like 'I am a fast learner.' A former restaurant shift lead moving into warehouse supervision can point to real experience: staffing a schedule around no-shows, training new hires fast, keeping a service line moving under pressure. Say that plainly instead of asking the reader to infer it.

Length and format

A page or less, in the same plain, native-text format guidance that applies to resumes: standard font, no images of text, submitted in the format the application asks for (usually PDF or DOCX). Address it to a named person when the posting gives you one; a generic 'Dear Hiring Manager' is a reasonable fallback when it does not.

When to skip it

Skip it, or keep it short, when a posting explicitly marks it optional and gives no upload field for one, when you are applying to a high volume of similar hourly roles where a tailored letter for each is not a good use of your time, or when the application system genuinely has nowhere to put it. A missing cover letter rarely disqualifies you on its own; a generic, clearly copy-pasted one can do more harm than sending none.

Sources

• CareerOneStop (sponsored by the U.S. Department of Labor) - resume and job search guidance
• Indeed Career Guide - resume and cover letter advice