New Hire Paperwork for a Dental Office: The Complete List

Two federal forms anchor the packet, and both come due around day one.

The first is the W-4: the IRS (Publication 15, 2026) tells employers to ask all new employees for a signed Form W-4 when they start work and to make it effective with the first wage payment.

For new hires right now that means the 2026 Form W-4.

If someone starts and never returns one, you do not get to skip withholding — the IRS says to treat the employee as if they checked Single or Married filing separately with no other entries.

File the signed form with your employment tax records, which the IRS says to keep for at least 4 years.

The second is Form I-9, which documents that the person is authorized to work in the United States.

Every U.S. employer must complete it for every person hired, including U.S. citizens.

The employee fills in Section 1 at the time of hire; you complete Section 2 — examining the documents the employee presents — within three business days of the hire.

Use a current edition: as of the USCIS page checked October 6, 2026, that is the 01/20/25 edition, and USCIS also allows the 08/01/23 edition bearing a 05/31/2027 expiration.

The earlier 08/01/23 print that expired 07/31/2026 has passed its stated validity, so check the edition date printed at the bottom of the form before you run a stack of copies.

Storage is its own rule.

Keep each Form I-9 for three years after the date of hire or one year after employment ends, whichever is later, and make it available for government inspection.

The form stays in your files — it is not filed with USCIS or ICE — so decide where it lives; keeping I-9s in one folder apart from the personnel files turns an inspection into a single drawer instead of a hunt.

The W-4 settles federal withholding.

If your state levies an income tax, it may issue its own withholding certificate for new employees to complete alongside the federal form — ask your payroll provider or state revenue agency whether one is required where you practice, and add it to the packet if so.

The other state-system form is one you file rather than one the employee signs.

Federal law (42 U.S.C. section 653a) requires employers to report each new hire to the State Directory of New Hires: the employee's name, address and Social Security number, the date work began, and the employer's name, address and federal EIN.

Under federal law the report is due no later than 20 days after the hire date; if you file electronically, two monthly transmissions 12 to 16 days apart also satisfy the rule.

States may set a shorter deadline, and several do.

Per the federal Office of Child Support's state chart, the shorter deadlines include:

The rows above are the ones verified for this guide, not the full chart — confirm your own state's current deadline with your state's new-hire registry before the next start date.

Three practical notes cut the work down.

The IRS notes that all 50 states have a new hire registry and that many states accept a copy of Form W-4 as the report, so the W-4 you already collect may be all the registry needs — check the accepted format.

A rehire counts as a new report if the person was separated from your practice for at least 60 consecutive days.

And contractors are not automatically outside the system: California requires reporting independent contractors to its new-hire directory within 20 calendar days of paying them $600 or more or entering a contract for $600 or more, and the same chart marks other states as requiring some independent-contractor reporting.

The packet opens with offer letters, which state the deal in writing — but three states verified for this guide also require a separate wage notice at hiring, each with its own coverage, format and follow-up rules:

California's exemption line matters for dental payrolls: because the Labor Code 2810.5 notice does not apply to employees exempt from overtime, a salaried associate dentist who is properly classified as exempt gets no 2810.5 notice, while employees who are not exempt from overtime still do.

Which of your roles are exempt is its own analysis — the exempt vs. non-exempt guide walks it.

This table is not a survey of every state: the three above are the ones verified for this guide, and other states' notice rules were not researched.

Confirm your own state's requirement with your state labor department before the next hire starts.

And keep the numbers identical across every document — the rate and basis in the offer letter, the statutory notice and the first paycheck should all match.

For clinical hires, part of the packet documents the credentials themselves.

Before day one, run the license, registration or permit your state requires through the issuing board's lookup, then file a copy of the current credential next to a dated note of what the lookup showed — who checked, on what date, and the status it returned.

Which roles need which credential is state-specific, so confirm the list for each role with your state dental board; the radiography certification guide covers the x-ray example.

How long to keep those copies has no federal answer we could verify: we found no federal rule setting how long license or permit copies must be kept.

The retention clocks that do exist attach to other documents — the I-9, the tax records, the payroll records covered below — so set the credential file's retention as your own practice policy.

What matters most is the sequence: the credential was verified before the first patient, and the copy plus the dated lookup note is your record of that.

Acknowledgment pages turn your policies into signed records — the signature shows the policy was delivered, to whom, and when.

Start with a handbook receipt.

Two states verified for this guide add specific paperwork at or near hire:

• New York: give each employee, at hiring and at every annual training, a written notice containing the practice's sexual harassment prevention policy and training information.
• Connecticut: employers with three or more employees must give each new employee the state's sexual harassment information — the material on the illegality of sexual harassment and the remedies available to victims — within three months of the start date.

Beyond the state mandates, have the employee sign a short receipt for the practice-specific policies that matter from day one — confidentiality, scheduling, uniform and attendance rules.

The signed page is ordinary evidence, not a formality: it is how you show a policy was actually delivered if the question comes up later.

Training paperwork sits in the same section of the file.

Under OSHA's Bloodborne Pathogens Standard, the hepatitis B vaccination must be made available after training, within 10 working days of initial assignment, to every employee with occupational exposure — unless the employee has already completed the series, is immune, or the vaccine is contraindicated.

Document the offer and the employee's response for every clinical hire with occupational exposure; the hepatitis B vaccination guide covers the offer's mechanics.

Then keep the records on their clocks: OSHA bloodborne pathogens training records for 3 years from the date the training occurred, and — for practices that are HIPAA covered entities — the required HIPAA documentation, policies and training records included, for six years from creation or the date last in effect, whichever is later.

Benefits forms complete the packet: the enrollment or waiver for each plan you offer, plus whatever the carriers require.

One notice has a federal deadline of its own.

For a group health plan subject to federal COBRA, the plan administrator must give each covered employee and spouse a general notice of COBRA rights no later than 90 days after plan coverage begins — and the duty sits with the plan administrator, which in a small practice may be the practice itself.

Federal COBRA does not apply to a plan for a year if the employer normally employed fewer than 20 employees on a typical business day in the preceding calendar year, so if that is your practice, ask your benefits broker whether a state continuation law applies instead.

Collect direct deposit on a signed authorization — account and routing details on a form the employee signs — and file it with the payroll records, where the clocks differ again.

Under the FLSA recordkeeping rules, payroll records must be preserved for at least 3 years, and certain supplementary records such as time cards for 2 years.

An emergency contact sheet rounds out the personal details: who to call, and how you want it handled, if an employee is injured at work or does not arrive.

That is the whole packet — two federal forms, the state report and any state notice, the credential file, the acknowledgments, and the benefits and payroll forms.

If you are still building the process around it, the dental hiring hub walks the full sequence from job ad to start date.