Editorial · September 7, 2025
Employee Onboarding Checklist: A First 90 Days Plan
An employee onboarding checklist keeps a new hire's first three months clear for both sides. This plan splits those 90 days into four parts: the paperwork, the first week, the first month, and days 31 to 90. The legal deadlines below come from federal rules. The rest is a practical plan you can adjust to your own team.
Before day one: get the paperwork ready
Send the offer details and the first-day schedule a few days early. Name the person who will greet the new hire, and set up a desk, login and email so nothing is waiting on day one.
Some forms have fixed deadlines. Federal rules say the employee fills out Section 1 of Form I-9 "at the time of hire." You then have "within three business days of the hire" to finish Section 2 by checking the employee's identity and work authorization documents. If the job lasts fewer than three business days, you do both at the time of hire.
Keep each I-9 on file. The rule is three years after the date of hire, or one year after employment ends, whichever is later. Do not mail it to the government. Store it so it can be shown if an agency asks.
Tax and reporting steps in week one
Have the new hire complete Form W-4, the Employee's Withholding Certificate. The IRS says the form exists so your employer can withhold the correct federal income tax from your pay. It also advises filling out a new one whenever your personal or financial situation changes, so tell staff they can update it later.
Next, report the hire. Federal law requires employers to report a new hire "not later than 20 days after the date the employer hires the employee." The report covers the employee's name, address and Social Security number, plus your name, address and employer identification number. Many employers use a W-4 or an equivalent form to send it. Your state may run its own new hire directory, so check its site for the exact steps and any shorter deadline.
Also check workplace posters. The Department of Labor's Wage and Hour Division lists posters such as the federal minimum wage notice. Its page says posting rules differ by law, and not every employer is covered by every notice. Put the ones that apply where staff can see them.
Week one: the people and the basics
The first week is about belonging and clarity. Plan these items:
- A short welcome from the manager, with a tour or a video call tour for remote staff.
- A one-page list of who to ask for what: pay questions, tech help, time off.
- The employee handbook, with time set aside to read it and ask questions.
- Safety basics for the job, plus the location of first aid and exits.
- A first small task the new hire can finish by Friday.
Pair the new hire with a buddy who is not their boss. A buddy answers the small questions people feel shy about asking a manager.
Days 1 to 30: learn the job
In the first month, the goal is to learn how the work gets done. Walk through the main tools and processes one at a time. Use short training sessions instead of one long day of slides.
Hold a short check-in every week, even if it is only 15 minutes. Ask three plain questions: what is going well, what is confusing, and what do you need from me? Write down the answers and act on one of them each week. At day 30, sit down for a longer talk and agree on goals for the next 60 days.
Days 31 to 60: build skill and ownership
Now the new hire should handle real work with less help. Give them a task they own from start to finish. Let them meet the teams they depend on, and have them shadow a coworker for a day.
Keep the weekly check-ins, and add one skill-building step, such as a course, a manual or a session with an expert on your team. At day 60, review the goals set at day 30. Say what is on track, what is late, and why.
Days 61 to 90: set goals and close the loop
By the final month the new hire should work on their own for most tasks. Use this stretch to look ahead. Set goals for the next six months, discuss how they like to learn, and talk about where they might grow.
At day 90, hold a full review. Ask the employee for feedback on the hiring and onboarding process too. What was missing? What was too much? Their answers are the best way to improve your list for the next hire.
Finally, check your own files. Confirm the I-9 is complete, the W-4 is on record, the new hire report was sent, and your notes from each check-in are saved in one place.
Sources
- 8 CFR 274a.2, Verification of identity and employment authorization: https://www.law.cornell.edu/cfr/text/8/274a.2
- 42 U.S.C. 653a, Reporting of information on newly hired employees: https://www.law.cornell.edu/uscode/text/42/653a
- Internal Revenue Service, About Form W-4: https://www.irs.gov/forms-pubs/about-form-w-4
- U.S. Citizenship and Immigration Services, Employment Eligibility Verification: https://www.uscis.gov/i-9
- U.S. Department of Labor, Wage and Hour Division, Workplace Posters: https://www.dol.gov/agencies/whd/posters