Hiring Your First Employee in Arizona: An 8-Step Checklist

Bringing on your first employee is an exciting milestone — it means your business has grown to the point where you need real help. But it also comes with new responsibilities. Before that first paycheck goes out, there are several legal registrations and payroll systems you need to have in place.

Here's the checklist I walk new business owners through when they're getting ready to hire.

Step 1: Register Your Business

Before you can hire anyone, make sure your LLC or business entity is properly licensed and legally able to hire employees. This sounds obvious, but it's worth confirming rather than assuming — especially if your business has changed structure or grown since you first registered it.

Step 2: Confirm Your Federal EIN

If your business already has an Employer Identification Number, you'll use that same number for payroll. You don't need a second one. What changes is how you use it: as an employer, you'll deposit payroll taxes through EFTPS, file Form 941 each quarter (or Form 944 if the IRS tells you to) and file Form 940 each year. If you're a sole proprietor who has been using your Social Security number, apply for a free EIN at IRS.gov before your first payroll.

Step 3: Register With the State

In Arizona, this means setting up three accounts before your first hire:

• Arizona DES (Department of Economic Security), for unemployment insurance

• ADOR (Arizona Department of Revenue), for income tax withholding

• E-Verify (U.S. Department of Homeland Security), for confirming each new hire's eligibility to work. Arizona requires every employer to use it, and enrollment is free at e-verify.gov.

The DES and ADOR registrations are required before you can legally withhold and remit taxes for an employee, so this is a step to handle early rather than after your first hire has already started. You can register with both agencies at once through Arizona's Joint Tax Application on AZTaxes.gov. Enroll in E-Verify before your first hire's start date too, since you'll need to create a case for each new employee within three business days of when they start work.

Step 4: Set Up Payroll

Choose a payroll system or provider that calculates withholdings correctly and follows Arizona's pay frequency rules. This is where a lot of new employers get tripped up — payroll isn't just about cutting a check, it's about correctly calculating and remitting federal and state withholdings on the right schedule.

This is where I recommend first deciding whether you want to handle payroll yourself, use a large national provider, or work with a local team who understands Arizona's specific rules. Each option has tradeoffs worth thinking through before you commit.

Step 5: Complete Required Forms

Every new hire needs a few specific forms on file before they start working:

• I-9 — verifying employment eligibility

• W-4 — for federal tax withholding

• Arizona A-4 — for state tax withholding

These aren't optional paperwork to get to eventually — they need to be completed at the time of hire, not after the first paycheck has already gone out. Arizona adds two more requirements at hiring. Report each new hire to the Arizona New Hire Reporting Center within 20 days of the start date, and verify each new hire through E-Verify, which Arizona requires of all employers.

Step 6: Get Workers' Compensation Insurance

Workers' comp insurance is required in Arizona, even for part-time or seasonal staff. This is a step business owners sometimes assume only applies to full-time employees or physically demanding jobs, but the requirement applies more broadly than that. It's worth confirming your coverage before your first employee's start date, not after.

Step 7: Post Required Labor Law Notices

Federal and Arizona law both require certain workplace posters to be displayed where employees can see them. This is a small, easy-to-overlook requirement, but it's a real compliance item — not just a formality.

Step 8: Establish Basic HR Policies

Write clear policies for your team, and make sure you're tracking paid sick time, which is required under Arizona law. Even a small business with one or two employees needs a basic system for this — it doesn't need to be a lengthy handbook right away, but it does need to exist.

The Bottom Line

Hiring your first employee is a genuine milestone, but it comes with real legal and financial responsibilities that need to be in place before that first paycheck goes out — not figured out after the fact. The goal isn't to have every system perfect on day one. It's to have the required pieces in place so you're not exposed to compliance issues or scrambling to fix something retroactively.

Taking these steps in order, before you extend an offer, makes the whole process considerably smoother — both for you and for the person you're bringing on.

Frequently Asked Questions

Do these requirements apply if I'm only hiring part-time? Most of them, yes. Workers' comp insurance, required forms, and state registrations generally apply regardless of whether the role is full-time, part-time, or seasonal.

What's the difference between an employee and an independent contractor for these purposes? This checklist applies specifically to employees. If you're bringing on an independent contractor instead, the requirements are different — generally a W9 and 1099 rather than payroll registrations and withholding forms. Misclassifying an employee as a contractor is a common and costly mistake, so this distinction is worth getting right from the start.

Can I handle payroll myself, or do I need a provider? You can handle it yourself, but it requires staying current on withholding calculations, filing deadlines, and both federal and Arizona-specific rules. Many small business owners find that a payroll provider — whether a large national company or a local team — reduces the risk of errors and missed deadlines.

How early should I start this process before my planned hire date? Ideally, several weeks before you plan to bring someone on. State registrations and setting up a payroll system both take some lead time, and you don't want to be finishing these steps after your new employee has already started.

We set up payroll, new hire reporting and E-Verify for first-time employers. See our Payroll & HR services.

Feel like you'd want guidance through steps like these? My Business 101 Crash Course is built for new and growing business owners who want to get set up the right way — from legal structure to payroll basics. Hop on the waitlist here: www.simfinaz.com/waitlist

Ready to talk through your specific hiring plans? Book a free 15-minute consult: www.simfinaz.com/book-online