What a cover letter is for
A cover letter is a short, personal note that accompanies your resume. The resume lists what you have done. The letter explains why you are applying, why this role and organization interest you, and how your background connects to what they need. Employers differ in how much weight they give it, and some never read one. Others use it to learn how you think and write. If the posting asks for one, send one; if it is optional, a good letter can still help.
The central rule is simple: add something the resume does not already say. A letter that repeats your job history in paragraph form wastes the reader’s time.
Before you write
Spend a few minutes on research. You need to know:
- What the role requires, based on the posting.
- What the organization does, in general terms, from its public materials.
- Who will read it. If a name is available, use it. If not, a simple “Dear Hiring Team” is acceptable.
- Which two or three points from your background best match the needs.
Choose your points by looking at the posting’s priorities, in the same way you would when tailoring your resume. Then choose one or two short examples to illustrate them.
A simple structure
Most effective letters fit on a single page, roughly three to five short paragraphs.
1. The opening
Say which position you are applying for and give a specific reason you are interested. Skip generic openers about being “excited to apply” with nothing behind them. Compare:
- Weak: “I am writing to apply for the coordinator position.”
- Stronger: “I am applying for the coordinator role because I enjoy turning scattered schedules into plans people can follow, which seems central to this work.”
The second version is still short, yet it tells the reader something about you. Do not claim anything you cannot back up.
2. The middle: your evidence
Use one or two paragraphs to show how your experience fits. Pick a small number of examples and tell them briefly. A useful pattern is: the situation, what you did, and what resulted. This is the same logic behind the STAR method often used in interviews.
A hypothetical example: “At my last job, our team’s request tracking was inconsistent. I built a shared checklist and trained colleagues to use it, and requests were handled in a more predictable order.” No invented statistics are needed. If you do have a number you can stand behind, you may include it.
Link your example to the employer’s needs. The reader should be able to think, “This person could help with what we need.”
3. The bridge, if you need one
If you are changing fields, returning from time away, or relocating, a sentence or two can address that directly. Name the connection rather than leaving the reader to guess, perhaps through transferable skills from earlier work. A career changer might use the letter to explain the reason for the move, and the guidance on career changer resume strategy pairs well with it. For time away, there are honest ways to handle employment gaps in a single sentence.
4. The close
Thank the reader, state your interest in discussing the role, and say you look forward to hearing from them. Keep it polite and brief. Avoid demanding a response or promising to call unless you plan to. A simple sign-off like “Sincerely” and your name is fine.
Tone
The aim is professional and warm, not stiff and not casual. Some guidelines:
- Write the way you would speak in a careful conversation with a respected colleague.
- Confidence is good; exaggeration is not. “I have experience with” is better than “I am the perfect candidate.”
- Be specific. Words like “passionate,” “hard-working” and “team player” say little unless you show them through examples.
- Avoid negativity about past employers.
- Be modest about what you know of the organization. If you are unsure, do not make claims about their internal work.
If your self-promotion feels uncomfortable, remember that stating facts about your accomplishments is not boasting. Clear, honest descriptions are typically received better than either vague modesty or inflated claims.
Length and format
- One page is usually enough.
- Use a standard font and plain formatting. If it will be pasted into an online form, keep it simple and avoid special characters.
- Match the look of your resume, with the same header or name format, for a consistent package.
- Name the file clearly, such as your name plus “cover letter.”
Because many employers use applicant tracking systems, using standard text and a clear file format helps ensure it is received properly.
Common mistakes
- Repeating the resume. Add context, not a list.
- Using the same letter for every job. Reusing a template is fine, but the opening and examples should be adjusted each time.
- Wrong name or company. Check this twice; mistakes here are memorable.
- Too long. If it spills past a page, trim.
- Skipping proofreading. Read it aloud, and have someone else read it too.
- Focusing only on what you want. Mention what you hope to gain only briefly, and spend more space on what you can contribute.
What if the employer does not request one?
Some application systems have no place for a letter. In that case, a few lines in the email or message that carries your resume can serve the same purpose. Say who you are, which role you are applying for, and one reason you are a good match. Keep it brief.
A final check
Before sending, ask: Does this sound like me? Does it say something the resume does not? Would a stranger understand why I am applying? If you can answer yes to all three, you have probably done what a cover letter should.
A strong letter cannot promise an interview, and hiring decisions rest on many factors you cannot see. It does give you a chance to present your reasoning in your own voice, which is often worth the effort.