Resigning as a machinist means more than handing over your locker key. You're walking away from setups you dialed in over weeks, CNC programs you wrote from scratch, and a machine you probably know better than anyone else on the floor. The next person in your seat will inherit your offsets, your tool library, and whatever's half-finished in the vise. A good resignation letter leaves the shop in a position to keep running without you—and keeps your reputation intact for the next gig.
The resignation email subject line
Keep it direct. You're not writing a LinkedIn post; you're notifying your supervisor or shop owner that you're leaving.
- "Resignation – [Your Name] – [Date]"
- "Two Weeks Notice – [Your Name]"
- "Notice of Resignation – Machinist Position"
Use your work email if you have one. If not, send it from a clean personal address, not the one that ends in hotmailracing89@.
Template 1 — short email (paste-ready)
Use this when you've already talked to your supervisor in person and just need the written record, or when the relationship is straightforward and you don't need to elaborate.
Subject: Resignation – [Your Name]
Hi [Supervisor Name],
This email serves as my formal resignation from my machinist position at [Company Name]. My last day will be [Date, typically two weeks from today].
Thank you for the opportunity to work here. I'm happy to assist with handover during my remaining time.
Best,
[Your Name]
Template 2 — standard email + attached letter
This is the most common format: a brief email with a slightly more detailed letter attached. The email goes to your direct supervisor; the letter goes into your HR file (if you have HR) or the shop owner's records.
Subject: Two Weeks Notice – [Your Name]
Hi [Supervisor Name],
Please see the attached letter of resignation. My last day will be [Date].
I appreciate the experience I've gained working on [specific machines, e.g., Haas VF-2, Mazak lathe, or manual mills], and I'll make sure all my current jobs and setups are documented before I leave.
Let me know how I can help with the transition.
Best,
[Your Name]
Attached letter:
[Your Name]
[Your Address]
[City, State ZIP]
[Your Email]
[Your Phone]
[Date]
[Supervisor Name]
[Company Name]
[Company Address]
Dear [Supervisor Name],
I am writing to formally resign from my position as Machinist at [Company Name], effective [Date]. This provides [two weeks / three weeks] notice as of today.
I've valued the opportunity to work with [mention specific equipment, projects, or team members if relevant]. During my remaining time, I will complete documentation for all active jobs, update tool offsets, and ensure CNC programs are saved and backed up.
Thank you for your support and the skills I've developed here. Please let me know if there's anything specific you'd like me to prioritize during the transition.
Sincerely,
[Your Name]
Template 3 — formal printed letter (for HR file)
Use this if your company has formal HR policies, if you're in a union shop, or if you want a clean paper trail. Print it, sign it, and hand it to your supervisor or HR. Keep a copy for yourself.
[Your Name]
[Your Address]
[City, State ZIP]
[Your Email]
[Your Phone]
[Date]
[HR Manager or Supervisor Name]
[Title]
[Company Name]
[Company Address]
Dear [Name],
I am writing to formally resign from my position as Machinist at [Company Name]. My last day of work will be [Date], providing [two weeks / appropriate notice period per company policy or union agreement].
I have appreciated the opportunity to work with [specific equipment, teams, or projects]. During my remaining time, I will ensure a smooth transition by:
- Completing or documenting all active jobs and setups
- Updating CNC programs, tool libraries, and offset sheets
- Organizing drawings, work orders, and quality records for handover
- Training or assisting whoever will be taking over my responsibilities
Thank you for the experience and skills I've gained during my time here. If you need to reach me after my departure regarding any job or setup questions, I can be contacted at [Your Email] or [Your Phone].
Respectfully,
[Your Signature]
[Your Printed Name]
What to do when there's no HR
Many machine shops are small operations—five to twenty people, no dedicated HR, and your "supervisor" is the owner who's also running the lathe next to you. In that case, have the conversation face-to-face first, then follow up with an email the same day. Print a copy if the owner keeps paper files. If they ask for help finding or training a replacement, decide whether you're willing (and whether you'll be paid for it). You're not obligated to stay longer than your notice period, but if you're leaving on good terms and the shop is in a bind, a few extra days can go a long way for your reputation in a tight-knit trade.
Resigning when you've been mistreated — keeping it professional vs. setting the record straight
Maybe you've been denied proper training, forced to run unsafe setups, or blamed for scrap that wasn't your fault. Maybe the shop ignores OSHA rules, pays under the table, or docks your hours when a job runs long. You want to write exactly what you think of the place—and sometimes, that's justified. But here's the calculation: if you're in a small regional trade community, your name will outlast this shop. Inspectors, suppliers, and other machinists talk. Burning the bridge might feel good for a day, but it can cost you referrals, references, or the next job.
The professional move: keep the resignation letter neutral. State your last day, offer minimal transition help, and don't elaborate. If safety or wage violations are involved, report them to OSHA or your state labor board separately—that's the official channel, and it carries more weight than a resignation letter ever will.
The exception: if you've been documenting issues (emails, photos, witness statements) and you're already pursuing a legal or regulatory claim, your attorney may want the resignation letter to reference those concerns on the record. In that case, follow their advice, not mine.
If you just need to vent, write the angry version, save it in a folder called "drafts I'll never send," then write the boring professional one and hit send on that. The boring one keeps you employed in this trade five years from now.
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Frequently Asked Questions
- Should I give more than two weeks notice as a machinist?
- If you're mid-run on a complex job, in the middle of a setup, or the only person who knows a critical CNC program, three to four weeks is considerate. Small shops with no backup machinists may need the extra time to cross-train or bring in a temp.
- Do I need to document all my setups before I leave?
- Yes. At minimum, leave notes on recurring jobs, offsets, tool libraries, and any custom fixtures or workarounds. The next machinist shouldn't have to reverse-engineer your process from scratch.
- Can I resign via email as a machinist?
- Yes, especially in larger shops with formal HR. Follow up with a printed copy for your personnel file. In very small shops where you work directly with the owner, a face-to-face conversation followed by an email confirmation is more respectful.