There's a predictable point in a company's growth where HR stops being something the founder handles informally and becomes something that needs actual infrastructure. For most small businesses, that point arrives somewhere between employee seven and employee fifteen - and the companies that figure this out before they hit it are much better positioned than the ones who figure it out after a compliance violation or a costly dispute.
Ten employees is a useful milestone to plan around. It's close to several important legal thresholds. It's the point where informal processes that worked fine with five people start breaking down. And it's early enough that you can build the right foundation before you're operating at a pace that makes it hard to stop and do things properly.
Why 10 Employees Is the Threshold That Matters
Federal and state employment laws don't apply uniformly to all employers. Many of the most significant ones kick in at specific employee counts, and 10 is where several start converging.
OSHA recordkeeping requirements apply to employers with 10 or more employees in most industries. Once you hit that threshold, you're required to maintain a log of work-related injuries and illnesses (OSHA Form 300) and post a summary annually.
The Americans with Disabilities Act (ADA) applies to employers with 15 or more employees, but state disability discrimination laws are often broader - California's Fair Employment and Housing Act applies at 5 employees, for example. By the time you're at 10, you're almost certainly covered by something, and you need to understand accommodation obligations.
The Family and Medical Leave Act (FMLA) applies at 50 employees, but it's worth building FMLA-style processes earlier. Employees will need medical leave before you hit 50. Having a documented process means you handle it consistently rather than making it up each time.
State-specific thresholds vary significantly. Many state anti-discrimination laws, paid family leave requirements, and predictive scheduling laws apply at thresholds well below federal law. If you're operating in California, New York, Illinois, Massachusetts, or Colorado, research your state's specific thresholds - you may be covered by more than you think.
Beyond the legal thresholds, 10 employees is simply the point where informal HR breaks down operationally. When you have 5 people, everyone knows each other's schedules, compensation feels intuitive, and disputes can be resolved in a conversation. At 10, you have enough people that inconsistency becomes visible, enough turnover risk that documentation matters, and enough complexity that doing everything in someone's head creates real risk.
The Checklist
Legal and Compliance
- Employer Identification Number (EIN) - You need one to hire employees and pay taxes. If you don't have one, get one through the IRS website before you make your first hire. It's free and takes minutes online.
- State tax and employer registration - Most states require you to register as an employer separately from your federal registration. This includes state income tax withholding accounts, state unemployment insurance (SUI) registration, and often a separate state business registration.
- Workers' compensation insurance - Required in virtually every state, with very few exceptions. The coverage requirements, rates, and carrier options vary significantly by state and by industry. This is not optional.
- I-9 verification process - You're required to verify every employee's eligibility to work in the United States using Form I-9, and you must retain completed forms for a minimum of three years.
- Required workplace posters - Federal and state law require certain notices to be posted in a visible location in your workplace. Federal posters cover things like the FLSA, OSHA rights, EEOC rights, and FMLA.
- OSHA compliance basics - At 10 employees, review your OSHA recordkeeping obligations. Even before you hit the threshold, you're required to provide a safe workplace.
- State and local leave law compliance - Paid sick leave mandates exist in more than 20 states and dozens of cities. Review what applies in your jurisdiction.
Documentation
- Employee handbook - Before your 10th hire is an excellent time to formalize this if you haven't already. At minimum, the handbook should cover your at-will employment statement, EEO policy, anti-harassment policy with a reporting procedure, PTO and leave policies, and a code of conduct.
- Offer letter templates - Use a standard template for offer letters. They should specify the role, compensation, start date, at-will employment status, and any conditions.
- Job descriptions - Written job descriptions form the foundation for performance reviews, compensation benchmarking, ADA accommodation analysis, and FLSA classification.
- Personnel files - Maintain a personnel file for every employee. It should include the signed offer letter, I-9 (stored separately), signed handbook acknowledgment, performance reviews, and any disciplinary documentation.
- Separation and termination documentation - Every termination should be documented. The reason, the date, any severance, final paycheck timing, and a copy of any separation agreement.
Payroll and Benefits
- Payroll system - If you're still running payroll manually in a spreadsheet, stop before your 10th hire. Modern payroll software handles tax calculations, withholdings, direct deposit, and year-end W-2 preparation automatically.
- Federal and state tax withholding setup - Every employee should complete a W-4 at hire. Make sure your payroll system is correctly configured for FICA, federal income tax, and state income tax withholding.
- Benefits decisions - Before 10 employees, you can offer health insurance through the small group market or SHOP marketplace. You should have made a deliberate decision about what you're offering and documented it.
- Retirement plan consideration - Several states now require employers who don't offer a plan to automatically enroll employees in a state-sponsored IRA program. Check whether this applies to you.
- PTO policy documentation - Even if your policy is simple, write it down with enough detail to answer the questions employees will ask.
Policies and Procedures
- Anti-discrimination and anti-harassment policy - This is non-negotiable. It should define prohibited conduct, explain how to report a concern, state that retaliation is prohibited, and describe the investigation process.
- Performance review process - Decide how often you'll conduct performance reviews, what format they'll follow, and how they'll be documented.
- Discipline and termination process - Document your approach to progressive discipline. At a minimum, write down how documented warnings work, what situations warrant immediate termination, and what the process looks like.
- Complaint and investigation procedure - Beyond harassment, employees need a way to raise other workplace concerns.
Systems and Tools
- HRIS (Human Resources Information System) - At 10 employees, a spreadsheet is probably still manageable, but you're approaching the edge of what's practical.
- Time tracking - If you have non-exempt (hourly) employees, accurate time records are legally required.
- Document storage and access control - Employee records need to be stored securely, with access limited to those who need it.
What Most Small Companies Skip (and Regret Later)
Signed handbook acknowledgments. Without them, your handbook is nearly useless as a legal defense. Employees can claim they never received a policy that affected them.
Consistent I-9 completion. I-9 audits happen, and the penalties for incomplete or improperly completed forms are significant - even if you're authorized to employ the person and just filled out the paperwork wrong.
Documentation of verbal warnings. A verbal warning that isn't documented is not a warning in any legally meaningful sense. If you're starting a progressive discipline process, write it down, have the employee acknowledge it, and keep it in their file.
Multi-state compliance. Remote work has made this a problem for companies that never thought of themselves as multi-state employers. An employee who moves from Texas to California doesn't just change time zones - they bring California employment law with them.
When to Hire Your First HR Person vs. Use Tools
Hire a dedicated HR person when you're growing fast enough that the volume of HR work is exceeding what a non-HR person can handle alongside their actual job, when you've had HR-related incidents that revealed a need for more robust human judgment, or when your company's culture work requires active, ongoing attention.
For many companies, that's somewhere between 25 and 50 employees.
Use tools first when you're below that threshold and the primary need is to get the mechanics right: documents in place, policies documented, compliance maintained, routine questions answered. AI-powered HR tools can give a small company access to capabilities that would otherwise require a dedicated HR hire or ongoing external consulting.
The goal isn't to avoid hiring an HR person forever. It's to build enough infrastructure now that when you do make that hire, they're building on a solid foundation rather than cleaning up years of neglect.
Most of what's on this checklist takes time to do, not money. Get started before you think you need to.
