New Hire Paperwork ChecklistEvery form you need, and when it is due
Four documents carry real legal weight when someone joins a US company. The other fifteen in your onboarding packet are either state-specific, benefits-related, or things your company decided it wanted. Teams get in trouble because they treat all nineteen as equally urgent, then miss the three-day I-9 deadline while chasing a handbook signature.
Every form has a clock on it. This is the one people miss.
Before day 1
Offer letter signed, background check consent, I-9 instructions sent
Day 1
I-9 Section 1 complete, W-4 and state withholding collected
Within 3 business days
I-9 Section 2 complete after you examine original documents
Within 14 days
Health insurance Marketplace notice delivered
Within 20 days
New hire report filed with your state directory
I have watched small teams build beautiful onboarding experiences with a welcome video, a swag box, and a buddy program, and then discover eight months later that half their I-9s were never countersigned. Paperwork is the least interesting part of hiring and the only part with a federal agency attached to it.
This checklist is written for US employers hiring W-2 employees. It separates what the law requires from what your company wants, gives you the deadline on each item, and flags the mistakes that show up over and over in ICE Form I-9 inspections. If you are still deciding whether the person should be an employee at all, read contractor vs full-time employee first, because the answer changes the entire form set.
One more framing note. Paperwork is downstream of a decision you already made. If your hiring process is clean and your offer letter was specific about start date, pay, and classification, most of this becomes mechanical.
The short list
The four documents that are genuinely required
Strip away everything optional and you are left with a very short federal list. Form I-9 proves the person is allowed to work. Form W-4 tells payroll how much federal tax to withhold. Your state withholding certificate does the same at the state level, in the roughly forty states that levy income tax. And the new hire report goes to your state directory so child support enforcement can find employed parents.
That is it. Everything else in your packet exists because your state added a notice requirement, your benefits carrier needs an enrollment, or your legal counsel wanted an IP assignment. Those matter. They just do not carry the same clock.
X HR team can do. Once you know which four items trigger a federal deadline, you stop treating the handbook acknowledgment like an emergency.
Federal, every employee
- Form I-9, Employment Eligibility Verification
- Form W-4, Employee's Withholding Certificate
- State new hire report (filed by you, not signed by them)
State and local
- State withholding certificate where one exists
- Wage theft or pay rate notice in states like NY and CA
- Paid sick leave notice where required
Payroll and benefits
- Direct deposit authorization
- Health Marketplace notice within 14 days
- Plan enrollment forms and beneficiary designations
Company policy
- Handbook acknowledgment
- Confidentiality and IP assignment
- Emergency contact and equipment agreement
Form 1
Form I-9, and the three-day rule everyone forgets
The employee fills in Section 1 no later than their first day of work for pay. You fill in Section 2 within three business days of that first day, after physically examining original documents from the Lists of Acceptable Documents. If the engagement is shorter than three days, both halves are due by the end of day one.
Use the current form. As of September 2026 the edition date to look for is 01/20/25, printed at the bottom of each page. The older 08/01/23 edition with an expiration of 05/31/2027 remains acceptable, but the 08/01/23 version stamped 07/31/2026 has lapsed. Download a fresh copy from USCIS I-9 Central rather than reusing the PDF sitting in your shared drive from 2023.
The employee chooses which documents to show you. One item from List A, or one from List B paired with one from List C. You do not get to request a specific document, and asking a candidate who mentioned a visa to bring their passport is exactly the kind of thing that turns into a discrimination claim. Teams hiring across borders should pair this with how to hire international employees.
Remote hires got a real fix in 2023. Employers enrolled in E-Verify and in good standing can examine documents over live video instead of in person, using the alternative procedure and Form I-9 Supplement B where applicable. If you are not enrolled in E-Verify, you still need an authorized representative to look at the physical documents on your behalf.
Form 2
Form W-4 and the state twin nobody mentions
Form W-4 sets federal income tax withholding. The redesigned version dropped allowances years ago, which still confuses employees who last filled one out in 2018. Your job is to collect it and hand it to payroll, not to advise on how to complete it. Point people to the IRS Tax Withholding Estimator and stay out of it.
If an employee never submits one, you do not get to guess. The IRS default is to withhold as if the employee is single with no other adjustments. Say that plainly in your onboarding email and the forms tend to come back faster.
The state certificate is the piece that slips. California uses DE-4, New York uses IT-2104, and several states accept the federal W-4 as a substitute. Nine states have no income tax at all, so there is nothing to collect. Check your state revenue department once, write the answer into your checklist, and stop rediscovering it every hire.
Form 3
State new hire reporting, the obligation small employers miss most
This one is invisible because the employee never signs anything. Under federal welfare reform law, every employer has to report each new or rehired employee to their state directory of new hires within 20 days of the hire date. Some states tighten that window. Employers who file electronically may instead transmit twice a month, with the two transmissions 12 to 16 days apart.
The report itself is small: employee name, address, Social Security number, date of hire, and your business name, address, and FEIN. The federal Office of Child Support Services employer portal links to each state directory.
If you run payroll through Gusto, Rippling, ADP, or a similar provider, this is usually filed for you automatically. Verify it once rather than assuming. I have seen companies discover two years of unfiled reports because the box was never ticked during payroll setup.
Notices
The notices you deliver, whether or not anyone signs them
A second category of obligation involves handing information to the employee. No signature required, but the delivery itself is the requirement.
The health insurance Marketplace notice goes to every new employee within 14 days of their start date, regardless of whether you offer coverage or whether they are benefits-eligible. The Department of Labor publishes model notices for both situations. If you sponsor a group health plan, the COBRA general notice and the summary plan description follow their own ERISA timelines.
State notices add another layer. New York and California both require a written pay rate notice at hire. Many states and cities require a paid sick leave notice. And federal workplace posters have to be displayed where employees can see them, which for a fully remote team means delivering them electronically. The DOL poster page lists what applies at your headcount.
Background checks sit in their own bucket. Under the Fair Credit Reporting Act, the disclosure has to be a standalone document, not a paragraph buried in the application, and you need written authorization before ordering the report. Our guide to pre-employment background checks covers the adverse action sequence in detail.
Most I-9 findings in an audit are process habits, not bad intent
What gets employers cited
- Asking for a passport specifically
- Photocopying documents for some hires and not others
- Completing Section 2 from a scan you never compared to the original
- Filing I-9s inside the personnel folder
- Re-verifying a permanent resident card at expiry
What to do instead
- Let the employee pick from the Lists of Acceptable Documents
- Apply one copy policy to every hire, or copy nobody
- Examine the original document, in person or over live video for remote hires
- Keep I-9s in one separate binder or folder
- Re-verify only when the work authorization itself expires
The five errors that turn up in almost every audit
Nearly all of these come from good intentions. Someone wanted to be thorough, or wanted to be helpful, and created a finding.
Document overreach. Asking for more or different documents than the employee offered is document abuse under the anti-discrimination provisions the Justice Department enforces. The employee picks.
Inconsistent copying. You may photocopy identity documents or not, but you have to do the same thing for everyone. Copying only for employees who look foreign-born is the pattern investigators look for.
Storing I-9s in personnel files. Keep them in a separate binder or a separate folder in your system. When an inspection notice arrives you have three business days to produce them, and you do not want to hand over medical or disciplinary records alongside.
Unnecessary re-verification. A permanent resident card expiring does not mean the person's work authorization expired. Re-verify only when the authorization itself has an end date.
Blank fields and missing signatures. The most common finding is boring: an unsigned Section 2, a missing date, a blank address line. Run a self-audit once a year, correct errors in a different colored ink with your initials and the date, and never backdate anything.
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How long to keep everything, and where
Retention is where paperwork discipline usually collapses. The forms get signed, they get dropped into a folder named after the employee, and nobody touches them again until something goes wrong.
The I-9 rule is the one to memorize: three years after the hire date, or one year after employment ends, whichever is later. For someone who worked five years, that means one year past their exit. For someone who lasted three months, it means nearly three more years.
Where each document lives, and for how long
Form I-9
3 years after hire or 1 year after exit, whichever is later
Separate from personnel file
Form W-4 and payroll tax records
At least 4 years after the tax is due or paid
Payroll file
Job application and interview notes
1 year minimum under EEOC rules
Recruiting file or ATS
Background check reports and consent
Follow FCRA and state disposal rules
Confidential file
Benefits enrollment and notices
6 years under ERISA record rules
Benefits file
Contractors get a different, much shorter packet
An independent contractor completes Form W-9 so you have their taxpayer identification number. No I-9. No W-4. No withholding. At year end you issue a 1099-NEC if you paid them 600 dollars or more.
Sending a contractor your full employee onboarding packet is a genuine risk. Handbook acknowledgments, set schedules, and company equipment agreements are the exact evidence a state agency uses to reclassify someone as an employee, with back taxes and penalties attached.
Keep two templates. One for employees, one for contractors, and make the difference obvious enough that nobody sends the wrong one at 6pm on a Friday.
Make the checklist run itself
Paperwork failures are almost never knowledge failures. Nobody forgets that I-9s exist. They forget that this particular person started on Tuesday and Section 2 is due Friday, because the information lived in a Slack thread.
Three habits fix most of it. Trigger the packet from the signed offer rather than the start date, so the employee has documents in hand before day one. Put a real owner and a real due date on each item instead of one vague task called onboarding. And run a quarterly sweep of open items, which takes twenty minutes and catches the two people whose forms went missing.
If you are still doing this in a shared sheet, look at onboarding software for small business and at the wider employee onboarding checklist that covers the first ninety days, not just the first week.
Frequently Asked Questions
What paperwork is legally required for a new hire in the US?
Four things are non-negotiable for a W-2 employee: Form I-9 for employment eligibility, Form W-4 for federal withholding, your state's withholding certificate if it has one, and a new hire report filed with your state directory. Everything else on a typical onboarding packet is either state-specific, benefits-related, or your own internal policy.
How long do I have to complete Form I-9?
The employee completes Section 1 no later than their first day of work for pay. You complete Section 2 within three business days of that first day. If the job lasts fewer than three days, both sections have to be done by the end of the first day.
How long do I have to keep new hire paperwork?
Form I-9 has its own rule: keep it for three years after the hire date or one year after employment ends, whichever date is later. W-4s and payroll tax records follow the IRS rule of at least four years after the tax is due or paid. Store I-9s separately from the personnel file so an audit does not expose everything else.
When do I have to report a new hire to the state?
Federal law gives employers 20 days from the date of hire to report a new employee to the state directory of new hires. Several states shorten that window, so check your own state's rule. Employers who report electronically can file twice a month instead, with the transmissions 12 to 16 days apart.
Do independent contractors fill out the same forms?
No. A contractor gives you a completed Form W-9 instead of a W-4, does not complete an I-9, and gets a 1099-NEC at year end rather than a W-2. Sending a contractor the full employee packet is a common and expensive way to blur the classification line.
Can new hire paperwork be completed electronically?
Yes. Electronic I-9s are allowed if your system meets the integrity, accuracy, and audit trail requirements in the federal regulations, and you can produce a legible paper copy on request. W-4s can be collected electronically too. Most payroll and onboarding platforms handle both.
Resources & Further Reading
Related Guides
- Employee Onboarding Checklist
What happens after the forms are signed
- How to Write an Offer Letter
The document every other form depends on
- Pre-Employment Background Checks
FCRA disclosure and adverse action
- Contractor vs Full-Time Employee
Classification decides the whole form set
External Sources
- USCIS I-9 Central
Current form edition, instructions, and document lists
- IRS: About Form W-4
Withholding certificate and employer instructions
- Office of Child Support Services: Employer Resources
State new hire reporting directories and deadlines
- U.S. Department of Labor: Workplace Posters
Which notices apply at your headcount
