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Employee Letter Examples: 16 Types and What Each Must Say

Sixteen employer letters with the moment each belongs to, the line in each that has to survive editing, the tone each family needs, and the lines to leave out.

Nick Anisimov

Nick Anisimov

FirstHR Founder

Core HR
22 min

Employee Letter Examples

The sixteen letters a small employer actually sends, the line in each of the seven most common ones that has to survive editing, the tone that fits each family, the lines that quietly promise something you did not mean to promise, and the few notices that arrive with a legal clock attached

The first employment verification letter I wrote took ten minutes and came back the same afternoon. The leasing office wanted three things: the start date, whether the job was ongoing, and a phone number for whoever signed it. I had sent a warm paragraph about what a great person Maya was, on company letterhead, containing none of the three.

That is the pattern with employer letters. Each one has a narrow job and a reader scanning for two or three specific lines, so the instinct that makes you a decent email writer works against you here. The risk is almost never what you left out. It is what you put in without meaning to: a promise about the future, an opinion about a person, or a reason you will have to defend in a room you have not been in yet.

So this is the directory I wish somebody had handed me. Sixteen employer letters with the moment each one belongs to, the line in each of the seven most common ones that has to survive editing, the tone that fits each family, and the short list of notices that come with a legal deadline attached. I build the document and signature side of FirstHR, so most of my week is spent looking at what small employers actually send, and a short list of letters makes up the bulk of it. This is general information rather than legal advice, and state rules differ, so check the ones that apply where you are.

TL;DR
An employee letter is a short dated statement from an employer that records a decision or confirms a fact. Sixteen types cover almost everything a small business sends, from offer and verification letters through recognition, warnings, and termination. Each needs one decision, an effective date, a signature, and a filed copy.

What Counts as an Employee Letter

An employee letter is a short written statement from an employer to a worker, or to a third party about a worker, that records a decision, confirms a fact, or puts an expectation on paper. It is defined by the record it leaves rather than by its length or its formatting.

Definition
Employee letter
A dated, signed communication issued by an employer that documents an employment decision (an offer, a promotion, a warning, a termination), confirms an employment fact to somebody outside the company (dates, title, income), or acknowledges something the employee did. The defining feature is that a copy belongs in the employee file, because the letter is expected to be read again by somebody other than the person it was addressed to.

The useful distinction is not formal against informal. It is whether the message creates a record that somebody will read back to you later. A text confirming a shift swap does not. A message approving unpaid leave does, even when it arrives as three lines in an email.

Almost everything on this page can be delivered by email, and most of it is. A letter is simply the version that carries a date, a named signer, and a copy in the file, and those three attributes are the whole difference. Use the letter format for anything that changes pay, status, or employment itself, and keep the copy wherever the rest of the personnel file lives rather than in a manager's sent folder.

Sixteen Employer Letters and When to Send Each

Sixteen letter types cover almost everything a small business sends an employee, and each one is defined by the moment it belongs to rather than by its layout. The third column is the line that has to survive editing, because it is the line the reader came for.

LetterSend it whenThe line it must contain
Offer letterYou have chosen a candidate and want the terms fixed before day oneTitle, pay rate and basis, start date, exempt or non-exempt status, and the at-will statement
Offer rescission letterYou have to withdraw an offer before the person startsThe date the offer is withdrawn, and which contingency failed if one did
Employment verification letterA landlord, lender, or agency asks for proof that somebody works for youEmployment dates, current status, and job title, with nothing else unless authorized
Income verification letterThe requester needs pay as well as employment statusPay rate, pay frequency, and a reference to the employee’s written authorization
Reference letterA former employee asks you to vouch for themWhat you observed, the dates over which you observed it, and your own role
Promotion letterTitle, scope, or reporting line changesEffective date, new title, new pay, and what moves into and out of the role
Salary increase letterPay changes without a title changeOld rate, new rate, effective date, and the first paycheck it appears in
Bonus letterA one-time payment is awardedThe amount, what it recognizes, the pay date, and that it is discretionary and non-recurring
Recognition letterSomebody did one specific thing worth repeatingThe act itself, the effect it had, and the date it happened
Appreciation letterSustained effort deserves acknowledgment with no single event attachedWhat you have noticed, over what period, in that person’s own terms
Leave approval letterYou are approving time away, paid or unpaidStart date, expected return date, pay status, benefits status, and the return-to-work step
Letter of concernSomething should be on record before discipline startsThat it is not discipline, what you observed, and what you expect instead
Written warningA standard has been missed after a conversation about itThe standard, the dated instances, the correction required, and the consequence
Suspension letterSomebody is off work pending an investigation, or as a disciplinary stepWhether it is paid, the dates, availability expectations, and what happens at the end
Termination letterEmployment is ending at the employer’s decisionEnd date, final pay handling, benefits continuation, and property return
Severance letterYou are offering payment beyond what is owedThe amount, the payment schedule, what the employee gives up, and the response deadline

Four of those sixteen carry most of the volume in a small company: the offer letter, the verification letter, the written warning, and the termination letter. If you standardize only four documents this year, standardize those, because they are the four a reader takes somewhere else, to a leasing office, a lender, a lawyer, or an unemployment hearing.

The hiring end is where a template pays for itself fastest, since the terms repeat and only the numbers move. Our offer letter templates cover the full-time, part-time, and contingent versions, and the offer letter generator fills one in from a short form if you would rather not start from a blank page at 9 p.m.

Proof-of-employment requests arrive weekly once you are past a handful of people, and they are the easiest letter to get wrong by being generous. The employment verification letter templates include both the salary and the no-salary versions, and the separate income verification letter is the one to reach for when the requester genuinely needs pay and has the authorization to see it.

Money and status changes are the family people most often deliver verbally and then forget to document, which is how two people end up remembering different effective dates. A promotion letter covers the version where the job changes, and a salary increase letter covers the version where only the number does.

The discipline family is the one that has to be built in order, because a step you skipped is the step the other side will point at. A letter of concern comes first and is explicitly not discipline, and the first written warning is where the documented process actually begins.

At the exit, two documents do different jobs and often travel together. The termination of employment letter states the decision and the practical consequences, while a severance letter offers something beyond what is owed and asks for something in return, which is why it has a deadline printed on it.

The Five Parts Every Employer Letter Needs

Every employer letter worth filing has the same five parts: a date and a named recipient, one decision stated in the first two sentences, an effective date with the change that lands on it, an honest statement of what the letter does not promise, and a signature with a job title under it.

A date and a named recipientDear Maya, not Dear EmployeeThe date is what makes the letter evidence rather than a draft, and it is the first thing anyone reading the file later looks for. A letter addressed to a role instead of a person reads as a form, which is the wrong signal for a promotion and an actively bad one for a warning.
One decision, in the first two sentencesSay the thing before you explain itThe reader is looking for a single fact: am I hired, is the raise approved, is my coverage ending, am I fired. Burying it under a paragraph of context does not soften anything. It only makes the person read the whole letter twice, the second time with their heart going.
An effective date and what changes on itThe calendar, not the sentimentName the date the decision takes effect, the first paycheck it appears in, and what moves into or out of the person’s job because of it. Most disputes I have seen about a letter were not about the decision. They were about which Monday it started.
The limits of what you are promisingWhat the letter does not doAn offer letter that does not restate at-will employment, a raise letter that implies an annual pattern, and a recognition letter that hints at a promotion all create expectations you did not intend to fund. One flat sentence prevents all three.
A signature, a title, and a filed copyOne owner, one fileSign it with a name and a job title so the reader knows the letter carries authority, and put the copy in the employee file the same hour. An unsigned letter and a signed letter nobody kept are the same document a year later.
Five parts, and the fourth is the one nobody writes. It is also the only one that ever costs money to have left out.

Length is not on that list, and it should not be. Almost every letter in this directory fits on a single page, and a written warning runs longer only because it has to carry dated instances. A two-page letter usually means the writer was arguing with somebody who is not in the room.

What worked for me
I started keeping a folder of the letters I had actually sent, sorted by type, the year we grew past twelve people. It sounds like filing and it is really a style guide. The second promotion letter took eleven minutes instead of an hour because the first one was sitting there with the structure already solved, and the third one caught a mistake I had made twice: I had been writing the effective date in the closing paragraph, where people read it last, instead of the second sentence, where they read it first. Nobody tells you about that error. You only see it by lining up your own letters and reading them side by side.
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The Seven Letters You Send Most, Line by Line

Seven of those sixteen are worth a closer look, because each one carries a line or a paragraph that decides whether the letter holds up when somebody reads it back to you. The rest of the structure is interchangeable. These are the parts I would not let an editor cut.

The Offer Letter

An offer letter has one job beyond making the offer, which is to prevent an argument about terms in week three. Pay basis, exempt status, contingencies, and at-will language all belong in it, and all four are routinely left out of offers that were negotiated warmly over the phone.

Two of those do disproportionate work. The at-will paragraph keeps the letter from reading as a contract for a fixed term, which matters everywhere except Montana, where the rules differ. And naming the exempt status explicitly forces the classification decision to happen before the first timesheet rather than after the first overtime dispute. Under federal rules the salary threshold for the white-collar exemptions is $684 a week, according to the US Department of Labor, and a title alone never settles the question.

The Employment Verification Letter

A verification letter should be boring, short, and entirely factual. The most common mistake is not omitting something, it is adding warmth: a sentence praising the employee turns a routine confirmation into an opinion that may be read back to you later.

The pay line is where the craft is. Do not refuse, and do not disclose. Name the limit of the authorization you actually hold and tell the requester exactly how to get the rest, which takes one sentence and keeps you out of the situation where a landlord learns somebody's salary because a form had a blank labeled income.

The Promotion Letter

A promotion letter is the only one on this list that people re-read years later, usually while deciding whether to stay. It should say what the job becomes, not just what the title becomes, and it should name the things that are deliberately staying where they are.

The paragraph that separates what moves from what stays is the one I would keep if I could only keep one. Unclear scope is the reason a promotion turns into the same job with more meetings attached, and the letter is the cheapest place to fix it, because both of you are reading the same sentence on the same day.

The Recognition Letter

Recognition is specific or it is noise. A letter naming one act, its effect, and the date it happened is worth ten letters praising hard work, because the specific version tells everybody else exactly what the company wants repeated.

Listing the two or three behaviors you would want repeated is what does the real work. Praise describes the past, while naming the behaviors turns the letter into instructions for everybody who hears about it, which is the mechanism behind most functioning employee recognition programs at this size.

The Appreciation Letter

An appreciation letter is the one with no event attached, and it is the one small employers send least. It exists to acknowledge sustained effort of the kind that never triggers an achievement, which describes most of the work that keeps a small company running.

The closing line matters more than it looks. Saying there is nothing to do with this letter stops it from reading like the opening move of a conversation about a raise, which is how an unexpected letter of thanks gets received when nobody has explained its purpose. Our letter of appreciation templates carry that shape for anniversaries, extra shifts covered, and quiet competence over a long stretch.

The Written Warning

A written warning is a factual record with a deadline in it, not a telling-off in writing. Dated instances, the standard that was missed, the correction period, the review dates, and the consequence all have to be there, and adjectives about the person must not.

Two structural choices are worth stealing. Say outright on the signature line that signing confirms receipt rather than agreement, which removes the most common reason an employee refuses to sign. And make the support section ask a real question instead of gesturing at help, because a chronic morning problem sometimes has a cause that a route change can fix, and you want to hear it before you are three steps into progressive discipline.

The Termination Letter

A termination letter should be short, final, and free of persuasion. It states the end date, gives one reason that matches the record, and then turns into logistics: final pay, benefits, property, and which agreements outlive the job.

Stay deliberately non-committal about what continuation coverage is available, because that depends on your size and your state. Promise a separate notice with a deadline in it, which is the only promise you can safely make on the day.

Getting the Tone Right for Each Family

Tone in an employer letter is set by the reader's situation rather than by your relationship with the person. The same founder writes a warm offer letter and a flat verification letter in the same hour, and both are correct.

Letter familyRegister to write inThe sentence that ruins it
Offers and promotionsWarm and precise. Enthusiasm is welcome, vagueness is notWe look forward to a long and successful career together, which reads as a promise of continued employment
Verification and referenceFlat, factual, and short, with no adjectives at allShe was one of the best employees we have ever had, in a letter that was asked to confirm dates
Recognition and appreciationSpecific and personal, signed by a person rather than by a departmentYour hard work does not go unnoticed, which names no work and no person
Leave and benefitsAdministrative and calm, carrying dates, pay status, and the next stepTake as long as you need, which invents an entitlement nobody costed
Concern, warning, and suspensionNeutral, behavioral, and dated. Describe actions, never characterYou have a bad attitude, which cannot be corrected, measured, or reviewed
Termination and severanceShort, final, and unarguable, then logisticsThis was a very difficult decision for all of us, which invites a negotiation

The recognition row is the one most worth spending an extra ten minutes on, because the letter is cheap and the effect is not. Gallup research finds that only about one in three US workers strongly agree they received recognition or praise for good work in the past seven days, and that employees who do not feel adequately recognized are twice as likely to say they will quit in the next year.

Who Gives the Recognition People Remember
Asked to recall their most memorable recognition, employees named their manager most often at 28 percent, followed by a high-level leader or the CEO at 24 percent, the manager's manager at 12 percent, a customer at 10 percent, and peers at 9 percent (Gallup). In a company small enough that the founder signs the letters, that second number is the one to notice: a letter from you carries weight that an automated badge cannot borrow.

The discipline row runs the other way. Neutral language is not softness, it is precision, and it is what lets the same letter be read a year later by somebody who was not there. Adjectives about a person invite an argument about the adjective, and you cannot review progress against an adjective.

The Lines to Leave Out of Every Letter

Four lines cause most of the trouble in employer letters, and all four get written out of good intentions rather than carelessness. Each one converts a record of a decision into a promise, an opinion, or an argument.

The first is the future promise. Annual salary figures written without the words at will, phrases about a long career here, and references to next year's review can all be read as commitments in a dispute. Give the number, give the basis, and keep the at-will sentence in place.

The second is the unrequested opinion. A verification letter that praises somebody, a reference letter that guesses at why a person left, and a termination letter that characterizes an attitude all put something on the record that nobody asked for and you may later have to defend. Say what you observed, and say when you observed it.

The third is the extra reason. Termination letters get longer when the writer is nervous, and every added reason is another sentence that has to hold up if the decision is challenged. One reason that matches the documented record beats four that partially do.

The fourth is the accidental disclosure. Medical details, immigration status, and pay belong out of general correspondence and inside their own files, and a letter is the most forwardable document you produce. The habit that keeps medical paperwork in a file of its own, which is where employee data privacy starts for a small team, is the same habit that decides what goes into a letter somebody outside the company may read.

The Sentence That Costs the Most
We are excited to have you with us for many years to come is the single most expensive sentence in small-business correspondence. It is warm, it is sincere, and in a wrongful termination claim it is exhibit A in an argument that you promised employment for a period. You can be just as warm by being specific about the present: we are glad you are joining us on March 24, and here is what your first week looks like. Save the future tense for the parts you actually control.
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Signing, Sending, and Filing the Letter

A letter becomes a usable record at the moment it is signed, delivered in a way you can evidence, and filed where somebody else could find it. Signing is the step everybody remembers, and the other two are the ones people assume happened.

1
Sign it with a name and a title
Not a department, not a company name alone. The reader needs to know who made the decision and what authority they hold, and the file needs it more, because the person who signed will eventually be asked what they meant.
2
Use e-signature where you can
Under the federal E-SIGN Act an electronic signature or record cannot be denied legal effect solely because it is electronic. An e-signed letter also records who opened it, when, and from where, which is evidence a scanned page does not carry.
3
Deliver it the way you can prove
Email with the letter attached, an e-signature request, or hand delivery with a witness present. For a termination letter, hand delivery plus an email copy to a personal address is the combination that survives somebody losing access to a work account at 5 p.m.
4
Ask for acknowledgment, not agreement
On anything disciplinary, the signature line should say outright that signing confirms receipt rather than consent. If the employee refuses anyway, note the refusal, the date, the time, and who witnessed it, then file the letter regardless.
5
File the copy the same hour
The copy in the file has to be the version the employee actually received, which means saving the sent version rather than the draft. Medical and immigration paperwork stays in separate files; the letter itself goes in the main personnel file.
6
Keep it for at least a year, usually longer
The federal recordkeeping floor for personnel records is one year from the record or the personnel action, and one year from the termination date for anyone involuntarily terminated. Other rules run longer, and any charge or claim freezes everything connected to it.

The legal basis for the second step is short and worth reading once: an electronic signature or record involved in a transaction affecting interstate commerce may not be denied legal effect, validity, or enforceability solely because it is electronic (15 U.S.C. 7001). Built-in e-signature is one of the reasons letters stop going missing once they live in the same system as the employee file rather than in a shared drive.

The retention floor comes from the EEOC recordkeeping rule, which requires personnel or employment records to be preserved for one year from the date the record was made or the personnel action involved, whichever is later, and requires the records of an involuntarily terminated employee to be kept for one year from the termination date (29 CFR 1602.14).

Those six steps only hold if somebody can see, in one place, which letters went out and what happened to each one. The sheet below is that register: one row per letter, with the decision, the effective date, how it was delivered and when it was acknowledged sitting beside each other. The second tab narrows to the handful of letters whose arrival you may one day have to prove, where the method, the timestamp and the witness matter more than the wording did.

Employee Letter Log and Proof of Delivery
ABCDEFGHIJ
1Date sentEmployeeLetter typeThe decision, in one lineEffective dateSigned by (name and title)How it was deliveredAcknowledged onWhere the copy is filedReview or destroy on
2
3
4
5
6
7
8
9
10
11
12
13

The column that earns its place is the review-or-destroy date on the first tab. A retention date written at the moment you file the letter is the only version of a retention policy that survives the person who currently remembers it.

The Letters That Arrive With a Legal Clock

Most employer letters have no statutory deadline, and a few do. Missing one of those is a compliance problem rather than a courtesy problem, and all of them cluster around leave, benefits, and the end of employment.

Notice or letterThe clockWho it applies to
FMLA eligibility noticeFive business days after the employee requests leave or you learn the leave may qualify, absent extenuating circumstancesPrivate employers with 50 or more employees in 20 or more workweeks in the current or previous calendar year
FMLA designation noticeFive business days after you have enough information to decide whether the leave counts as FMLA leaveThe same covered employers, for each qualifying leave
Employer notice of a COBRA qualifying event30 days after the qualifying event, sent to the plan administratorGroup health plans of employers with 20 or more employees in the prior year
COBRA election notice14 days after the plan administrator receives notice of the qualifying eventThe plan administrator, to each qualified beneficiary
COBRA election window60 days from the later of the coverage loss or the date the notice is providedThe qualified beneficiary deciding whether to continue coverage
Final paycheckSet by state law, and in several states it is the last day workedEvery employer, with the rule following the state where the employee works

Two of those rows carry a headcount that matters to a small employer. The FMLA reaches private employers with 50 or more employees, and COBRA reaches group health plans of employers with 20 or more, according to the US Department of Labor. Below either line you may still owe something similar under state law, which is why whether COBRA applies to a small business is a state-by-state question rather than a yes or no.

The two FMLA notices are the ones most often late, because they are triggered by a conversation rather than by a form. An employer has five business days to provide the eligibility notice after an employee requests leave or the employer learns leave may be FMLA-qualifying, and five business days to provide the designation notice once it has enough information to decide, absent extenuating circumstances (29 CFR 825.300). A ready-made FMLA designation notice removes the drafting time from a clock that is already running.

On the benefits side, the employer notifies the plan administrator within 30 days of a qualifying event, the plan administrator has 14 days to send the election notice to qualified beneficiaries, and the beneficiary then has 60 days from the later of losing coverage or receiving that notice to elect continuation coverage (DOL, An Employer's Guide to Group Health Continuation Coverage). This is exactly why the termination letter above promises a separate notice rather than explaining coverage itself.

Final pay is the rule that varies most and surprises people most. Some states require payment on the last day worked when the employer ends the employment, others allow it on the next regular payday, and the difference decides what your termination letter can honestly say.

Where Small Employers Get Letters Wrong

Six patterns account for most of the damage, and none of them involve bad intentions.

Burying the decision is first. Two paragraphs of context in front of the news do not cushion anything, they just make the reader scan for the sentence that matters and then go back to the top to find out what they missed.

Letting the letter do the conversation is second. A warning or a termination that arrives with nothing said in person reads as an ambush, and it throws away the one chance you had to hear something that might have changed the decision.

Skipping the step before the step is third. A written warning with no documented conversation in front of it, or a termination with no warning in front of it, leaves a record that begins in the middle, and the gap is the first thing anyone reviewing the file will notice.

Forgetting the effective date is fourth. Pay changes, title changes, and coverage changes all need a calendar date and, where money is involved, the specific paycheck the change appears in. Two people remembering different Mondays is the most common letter dispute I have seen.

Letting the letter live in a sent folder is fifth. If the only copy is in the manager's email, it is gone the day that manager leaves, and it is not findable on the afternoon you need it. Filing it with the rest of the employee documents is a two-minute habit, and HR document management is mostly that habit repeated.

And rewriting each letter from scratch is last. It is slower, it is less consistent, and the inconsistency itself becomes evidence when two employees in similar situations received noticeably different documents. A folder of your own sent letters, or a set of organized employee files with the templates alongside them, solves it in an afternoon.

Key Takeaways
An employee letter records a decision, confirms a fact, or sets an expectation, and what makes it a letter rather than a message is a date, a named signer, and a copy in the file.
Sixteen letter types cover almost everything a small business sends, and four of them (offer, verification, warning, and termination) carry most of the volume and most of the risk.
Every letter needs one decision in the first two sentences, an effective date with the change attached to it, a statement of what is not being promised, and a signature with a job title.
Tone follows the reader’s situation rather than your relationship: warm and precise for offers, flat and factual for verifications, specific for recognition, and neutral and dated for anything disciplinary.
The four lines to cut are the future promise, the unrequested opinion, the extra reason, and the accidental disclosure of pay, medical, or immigration detail.
Federal law lets you sign and send letters electronically, personnel records must be kept at least one year, and the FMLA and COBRA notices are the few letters with a legal clock already running.

Frequently Asked Questions

What is an example of an employee letter?

A three-sentence employment verification letter is one of the most common letters a small business sends: it names the person, the start date, the current status, and the job title, and it stops there. Other everyday examples are an offer letter setting out pay, start date, and at-will status; a promotion letter naming the effective date and what moves into the role; a recognition letter describing one specific thing somebody did and the effect it had; a written warning listing dated instances, the standard that was missed, and what happens next; and a termination letter stating the end date, final pay, benefits, and property return. The seven most common types are worked through below, each with the one line or paragraph that decides whether the letter holds up later.

How do you write a letter to an employee?

Lead with the decision and explain it afterward, in that order. The reader is looking for one fact, and putting a paragraph of context in front of it does not soften the news, it only makes them read the letter twice. After the decision, give the effective date, the first paycheck it shows up in where money is involved, and the practical detail of what changes because of it. Then state plainly what the letter does not do, which is the sentence almost everyone skips and the only one that ever costs money later. Sign with a name and a job title rather than a department, keep the whole thing under one page, and file a copy the same hour you send it.

What should an employment verification letter include?

Dates of employment, current employment status, and job title, plus a phone number for whoever signed it. That is the complete list for a standard request, and a letter that adds more is usually doing the employee a disservice rather than a favor. Leave out compensation unless the employee has authorized releasing it in writing, because a landlord or lender who asks for proof of employment has not been given permission to see pay. Leave out opinions about performance entirely: a mortgage underwriter has no use for them, and a sentence praising someone in a verification letter is a sentence you may have to explain if the relationship ends badly. Keep a copy of the written authorization with the copy of the letter.

Should a termination letter say why the employee was fired?

Give one reason, in one sentence, and only where it matches the record you already have. A termination letter is not the place to build a case, argue, or list every incident from the past year, because every extra sentence is one more thing that has to hold up if the decision is challenged. If a written warning preceded the decision, referring to it by date is usually enough. What the letter does need is the end date, how final pay is being handled, what happens to benefits and when that notice arrives, what property comes back, and which agreements survive the end of employment. Several states also require specific separation or unemployment notices, so confirm what yours asks for.

Do employee letters have to be signed on paper?

No. Under the federal E-SIGN Act, a signature, contract, or record in a transaction affecting interstate commerce cannot be denied legal effect, validity, or enforceability solely because it is in electronic form. In practice that means a signed PDF or an e-signature inside an HR system is as good as ink for the letters on this page, and it is usually better, because the system records who opened the document, when they signed it, and from where. What matters more than the format is that the version in your file is the version the employee saw. Sending a letter as an email attachment and keeping a slightly different draft in a folder is the failure mode to design out.

How long should we keep a copy of a letter we sent an employee?

One year is the federal floor for personnel records under the EEOC recordkeeping rule, measured from the date the record was made or from the personnel action involved, whichever comes later. For anyone who was involuntarily terminated, the clock runs one year from the termination date instead. Those are minimums rather than targets. Other rules reach further, a discrimination charge or a lawsuit freezes everything related to it, and the practical retention question for a small business is usually storage discipline rather than storage cost. Keep letters with the rest of the employee file, keep medical and immigration paperwork in separate files, and write the retention rule down so it survives the person who currently remembers it.

What is the difference between a letter of concern and a written warning?

A letter of concern is not discipline and a written warning is, and the letter itself should say which one it is. A concern letter records something you noticed early, describes the gap between what happened and what is expected, and asks for a change, without naming a consequence. A written warning is a step in a documented process: it lists specific dated instances, restates the standard, sets a correction period with review dates, and states plainly what follows if nothing changes, usually further action up to and including termination. Mixing them is the common error. A concern letter carrying a threat becomes discipline the employee never got to respond to, and a warning with no consequence in it gives you nothing to rely on later.

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