Vesting is the employer's money clock: your contributions are always yours, the match follows the schedule. Leaving before a vesting date forfeits matched dollars, and the forfeiture date is the negotiation trigger.
Schedule Types
- Graded (2-6 years): typical 0/20/40/60/80/100% pattern. The vesting date is the plan document's date, not your anniversary.
- Cliff (1-3 years): 0% before the cliff, 100% after. Leaving one day before the cliff forfeits everything.
- Immediate: safe; no timing games.
Plan rules live at irs.gov; the plan summary document is the paper to read on your last day.
Layoff-Round Credit
Round packages often accelerate vesting: "full vesting at separation" is a fundable ask for senior roles and the layoff pattern. The ask goes in the severance scripts guide, and the equity side is in the equity guide. Confirm the forfeiture date in writing before you sign.
The full exit audit lives in the exit checklist, and the rollover order is in the rollover guide.
Put the rule into action
Write the letter with the free Severance Package Negotiation Letter generator. The state pages carry the local payout and notice windows, and the application tracker keeps the follow-up date in writing.
Put the rule into action
The Audit You Run Before Your Last Day
Direct answer: vesting is decided by dates in a plan document, not by your hire anniversary or what HR remembers. Run the audit while you still have portal access, because the forfeiture date is the number that decides whether your last two weeks are worth more than your severance negotiation. Six items.
- The plan document or summary plan description. It states the schedule type, the vesting percentages, and the forfeiture language. Request it in writing if the portal hides it.
- The vesting dates themselves. Ask for the exact next vest date for employer match, and for each grant if equity follows its own clock.
- Your service credit. Ask what start date the plan uses, and whether any leave, unpaid gap, or rehiring changed it.
- The balance statement. Save the most recent statement showing vested and unvested employer amounts, dated.
- The separation rule. Some plans require repayment of an outstanding loan or offset it at distribution; see 401(k) loan offset.
- The payout method. Ask for a direct rollover option rather than a cash-out, per the direct rollover entry.
Model it in the Vesting & Cliff Calculator: units, months served, cliff, and the as-of date. Then decide what you are asking for.
Breaks, Rehires, And Transfers That Reset The Clock
The most expensive vesting errors are record errors. Three situations change the answer without anyone telling you.
- A rehire code. Leaving and coming back can create a new service start under the plan's break-in-service rules, which resets employer match vesting. Ask which date the plan uses now.
- An acquisition or entity change. When a plan sponsor changes, service credit follows the merger terms in the plan document, not the badge you wear.
- An internal transfer. Vesting generally continues with employment, but payroll reclassification can create a new hire record. Confirm in writing before the move.
- Leave without pay. FMLA and medical leave usually count as service for vesting; unpaid gaps beyond that depend on the plan. Ask, and keep the answer; see the 401(k) vesting entry.
Cliff schedules are the unforgiving version: 0% before the cliff date and 100% on it, so a resignation or layoff two weeks early forfeits everything. The cliff vesting entry explains the federal ceiling concept; the plan document sets your actual date.
The Acceleration Ask In A Layoff Round
When a reduction in force is on the table, vesting is one of the cheapest things for the employer to give. Ask for it explicitly, in writing, before you sign the release.
- Full vesting at separation for employer match and, where the plan allows, unvested equity. This is a common ask in layoff rounds and costs the employer a decision, not a formula change.
- Twelve months of acceleration if full vesting is refused. The calculator shows what that tranche is worth, so the ask is a number rather than a wish.
- Extended exercise windows for options, which cost nothing in cash and can change the tax year.
- The date, named. Ask which date triggers the acceleration: separation date, notice date, or the plan's eligibility date. A clause without a date is not a benefit.
- Keep the vested balance yours. Vested amounts are earned; do not let a release waive them. See the release of claims entry.
Send the ask with the Severance Package Negotiation Letter generator alongside your weeks and benefits requests, and log the response date on the tracker.
| Schedule Type | Typical Pattern | The Risk At Separation |
|---|
| Graded | Steps up by year until 100% | Leaving between steps forfeits the unvested share |
|---|
| Cliff | 0% until a single date, then 100% | One day early loses the entire employer amount |
|---|
| Immediate | 100% from the first contribution | No timing game; verify the record anyway |
|---|
| Match after rehiring | Follows break-in-service rules | A new service start resets the schedule |
|---|
| Equity grant | Its own vest dates and forfeiture clause | Separation stops future vesting unless accelerated |
|---|
For the current text behind these numbers, start with the California job exit rules page and the New York job exit rules page, along with the severance layoff math guide hub. Those sources state the rule in full; this page only points at them.
\nFrequently Asked Questions
- What decides my actual vesting date?
- The plan document, not your anniversary or your manager's memory. Ask for the exact next vest date and the service-start date the plan uses, in writing, and keep the dated balance statement beside it so a dispute has two records instead of one.
- Can a rehire reset my 401(k) match vesting?
- Yes, when the plan's break-in-service rules treat the gap as a break in service or the rehire creates a new employment start. Ask which date the plan currently uses for you before you assume the old schedule still applies.
- Should I ask for full vesting in a layoff package?
- Yes, and ask for it before signature. Full vesting at separation, or twelve months of acceleration, is a common fundable ask in a reduction-in-force round because it requires a plan decision rather than a new formula.
- What happens to unvested match when I leave?
- Unvested employer money returns to the plan under its forfeiture rule, while your own contributions are always yours. Confirm the forfeiture date, then decide whether timing your last day or negotiating acceleration is worth more.
Service credit, the cliff date, and the forfeiture clock are plan rules, not law, and the wage lines that ride with a separation — final pay, PTO payout, and the pay window — are state rules graded in this build. Confirm the service start date with the plan administrator, confirm the pay window with the state agency named on the state rule pages, and run the months served, the cliff, and the units through the vesting calculator so the acceleration ask has a number attached.
Sources (official record — verify before filing)
IRS — tax guidance