New Hire Paperwork: The Complete Checklist

Two documents are non-negotiable for every hire. The Form I-9 — Section 1 by the first day of work for pay, Section 2 within three business days, per the I-9 guide — and the Form W-4, which drives federal withholding from the first paycheck. Under federal child-support enforcement law, you must also report every new hire to your state new-hire directory within 20 days — the HHS directory of state portals is linked below, and a number of states shorten that window or require reporting of independent contractors too.

The state layer is where checklists go stale. Depending on the work state you may owe: a state withholding certificate (many states no longer piggyback on the federal W-4), a wage notice stating the rate, payday, and employer identity (New York's WTPA and California's 2810.5 notice are the models — and in Maryland, the hiring-time leave notice is what makes a PTO limitation enforceable, as covered on the Maryland page), paid sick leave notices in the states from our sick leave guide, and workers' comp and disability insurance postings. Build the packet per work state, not per headquarters.

Day one also starts clocks you set yourself: the benefits enrollment window, retirement plan eligibility and any auto-enrollment, and the handbook acknowledgment — the signature that later proves the employee knew the at-will status, the PTO terms, and the complaint procedure. The handbook guide covers what that document should say; the acknowledgment is worthless if the handbook itself promises more than you intend.

Structure beats volume: a personnel file (offer, acknowledgments, reviews, discipline), a separate I-9 file (audit-ready, and destroyed on the 3-year/1-year formula), and a separate confidential file for anything medical — ADA and FMLA materials legally cannot live in the personnel file. The documentation habits that win termination disputes, covered in the termination guide, start with a file built correctly on day one.