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How to Write a Letter or Email to a Former Employer
To write a letter to a former employer, send a short, personal note to the manager who knew your work. Open with one real memory or lesson from your time there. Keep any ask small and easy to say yes to. You might want your old job back, a reference or just to reconnect. Either way, details and thanks do the work.
Your former employer is one of the few people who has seen your work up close. That makes them a source of references, referrals, rehires and sometimes new business. But the bond cools fast after you leave. The first message back sets the tone for everything after it.
What makes it work is proof you remember the job as more than a paycheck. Name a project, a lesson or a person. Keep it short, and keep it about them as much as you. If there is an ask, make it one they can answer in a single reply.
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Free, no signup. The example is filled in: press the button, then replace it with your own situation. In Capstone, a message like it is written for each person you know when their check-in is due.
10 examples to copy
One message is easy. Hundreds of people, all year, is the hard part. Capstone Outreach puts everyone you know on a rhythm you pick, from weekly to every three months. When someone is due, a message like these is already written in your voice from your history with them. You approve it, and it goes from your own email or phone. See how it works.
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Everyone on a rhythm. Who is due, and when. Recorded in the app on a demo account.
1. Asking for your old job back
Subject: Exploring a return to [Company]
Why it works: It asks for a talk instead of a job. That is far easier for a former manager to say yes to.
2. Thank-you note a few weeks after leaving, no ask
Subject: Thank you, [Name]
Why it works: A specific thank-you with no request makes every future message from you welcome.
3. Asking for a reference for a specific role
Subject: Reference request for a [Role] position
Why it works: It tells them just what to speak to and does the prep work for them. That makes for a stronger reference.
4. After two years of silence, no ask
Subject: Thought of you this week
Why it works: A real memory explains why you're writing now, so the long gap feels natural, not awkward.
5. After a layoff, keeping the door open
Subject: Thank you, and staying in touch
Why it works: Leaving with grace after a layoff turns a hard moment into a manager who wants to help you.
6. Applying for a posted opening at your old company
Subject: Applying for the [Role] opening at [Company]
Why it works: It pairs a real opening with a real result, so the case for rehiring you makes itself.
7. Congratulating them on company news
Subject: Congratulations on [milestone]
Why it works: Tying their news to a shared memory reminds them you were part of the story, without asking for anything.
8. Reconnecting as a potential client or partner
Subject: A former teammate with a possible fit for [Company]
Why it works: Inside knowledge earns the talk, and the easy opt-out protects the bond if the answer is no.
9. Referring a strong candidate to your old team
Subject: A candidate for your [Role] opening
Why it works: Giving before you ask makes you the former employee they're glad to hear from.
10. Offering freelance or contract help
Subject: Available for project work on [area]
Why it works: It names the one edge no outside contractor has, no ramp-up, and makes saying yes low risk.
Sending these to more than a few people? See how people keep track of who to follow up with, and when: what a personal CRM does and the best personal CRMs, compared.
When to send it
- Send a thank-you note within the first month after you leave. The details are fresh and the goodwill is still warm.
- Ask for your old job back once you've been gone long enough to show what you learned. That's usually at least six months. If the new role clearly isn't working, go sooner and be honest about it.
- Ask for a reference only after you're a finalist. Do it at least a week before the hiring company is likely to call.
- Reach out within a day or two of seeing company news. That way a congrats note feels timely, not like an excuse.
- Send Tuesday through Thursday in the morning. Avoid month-end, budget season or any busy period you know they have.
Subject lines
- Exploring a return to [Company]
- Interested in rejoining the [team] team
- Rejoining [Company]: open to a conversation?
- Former [team] member applying for [Role]
- Thank you, [Name]
- What I took with me from [Company]
- Reference request for a [Role] position
- Would you be a reference for me?
- Thought of you this week
- Catching up after [time]
- Congratulations on [milestone]
- Staying in touch after [Company]
- A candidate for your [Role] opening
- Quick question from a former teammate
- Available for project work on [area]
- A possible fit for [Company] from a familiar face
What to avoid
- Don't criticize your new employer or explain why the grass wasn't greener. It makes the reader wonder what you'll say about them.
- Don't open with an ask after years of silence. Lead with something specific, or send a no-ask note first.
- Don't send a generic note that could go to any boss. Name a project, a lesson or a person.
- Don't assume your old role, title or salary is waiting for you. Ask about fit and let them tell you what exists.
- Don't reopen old arguments or how you left, even if you were let go.
- Don't write to HR or a general inbox when you had a direct manager who knew your work.
After you send it
If you don't hear back within a week, send one short follow-up that adds something new. Try a fresh detail, a set time to talk, or an easier yes. If that gets nothing, let it rest for a few months. Once you've reconnected, stay in touch two to four times a year with something useful. Share congrats on news, an article for their work or a candidate referral. Thank them for anything they do for you, and tell them how it turned out.
Building the habit: how to keep in touch with contacts and what a personal CRM does.
What if they write back and want a call? Share your digital business card with a booking link. Your old manager picks a time that works, and Capstone keeps the call on the same timeline as this letter.
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A study of 20 million LinkedIn members found that acquaintances, more than close friends, led to new jobs (Science, 2022). Capstone keeps those people warm. You approve every message, and it goes from your own email or phone.
Frequently asked questions
How do I write a letter to my employer about leaving my job?
Keep it short, positive and specific. State your last day, thank them for one or two real things, and offer to help with the handoff. Skip complaints and long excuses. That letter is the first line of your future relationship. Write it like someone you'd want to hear from again. A few weeks later, send a personal thank-you note to your manager.
Is it bad to say no to contacting a past employer?
Not always. Saying no to contacting your current employer is normal, since you may not want them to know you're looking. Saying no to a former employer raises more questions. Give a brief reason and offer a different reference from that company. A peer or another manager who knew your work well is a good choice.
How do I professionally say I left my job?
Say it in one neutral sentence about what you were moving toward, not away from. For example, "I left [Company] to take on a role with more client ownership" works well. If you were let go, say so plainly and briefly. Try "My role was eliminated in a restructuring" and stop there. Then move straight to what you learned and what you want next.
How to professionally ask for your old job back?
Email your former manager directly. Lead with what you valued about the team, and explain what you've added since you left. Ask for a talk, not the job itself. Don't badmouth your current employer. Keep it under 150 words and offer a short call. Accept with grace that they may not have an opening right now.
Should I email my former manager or HR?
Email the former manager who knew your work best. They can speak to your work, push for you and route you to the right people. Go to HR only for paperwork, like confirming your past job, benefits or final forms. If your manager has left the company, write to the most senior person who worked with you directly.