Remote Hiring Compliance: Rules for Hiring Across US States

Your company just hired its first remote employee in California. Your headquarters are in Texas. Within 30 days, you owe the state of California employer registration filings, income tax withholding setup, unemployment insurance registration, workers' compensation coverage, and compliance with some of the strictest employment laws in the country. Miss any of it, and you are exposed to penalties that start in the thousands and scale from there.

This is not a hypothetical. It is the reality facing every US employer that hires across state lines. And the problem compounds: each new state you hire in creates a distinct set of obligations. By the time you have remote employees in five states, you are managing five different tax withholding regimes, five sets of labor laws, five unemployment insurance registrations, and potentially five separate workers' compensation policies. Get any of it wrong, and you face back taxes, interest, regulatory fines, and employee lawsuits—sometimes all at once.

The solution is not to avoid remote hiring. The talent market has moved permanently toward distributed work, and employers who restrict hiring to a single state are competing with one hand tied behind their back. The solution is a structured, state-by-state compliance process that you build once and update as regulations change. This guide gives you that process, covering every major obligation category across the states where US employers most frequently hire remote workers.

Why Remote Hiring Compliance Matters

Remote hiring compliance is not a nice-to-have. It is a legal obligation that activates the moment an employee begins performing work in a state where your company is not yet registered. The consequences of non-compliance are concrete and well-documented.

Tax penalties. State tax agencies pursue employers who fail to withhold and remit state income taxes. Penalties typically include the full amount of tax that should have been withheld, plus interest (often 1% per month or more), plus additional failure-to-file and failure-to-pay penalties. The IRS also scrutinizes employers whose state filings do not match federal payroll records, creating federal audit exposure as a secondary consequence of state non-compliance.

Employment law violations. When you hire an employee in a state, that state's employment laws apply to that employee. If your policies were designed for your home state and do not account for the employee's state, you may be violating minimum wage laws, overtime rules, meal and rest break requirements, leave mandates, or anti-discrimination protections without knowing it. Employee lawsuits for wage and hour violations in states like California and New York regularly result in six-figure settlements, even for small employers.

Workers' compensation exposure. Most states require employers to carry workers' compensation insurance for employees working in that state. Operating without required coverage is a criminal offense in some jurisdictions. If an uninsured employee is injured, the employer is directly liable for all medical costs and lost wages, with no policy to absorb the claim.

Loss of business authority. States can revoke an unregistered employer's right to conduct business within their borders, which can affect contracts, licensing, and the ability to enforce agreements in that state's courts.

These are not theoretical risks. State agencies share data through the Department of Labor's unemployment insurance systems and through IRS information sharing agreements. An employer that registers in one state but not another, while clearly having employees in both, creates a visible compliance gap that auditors are trained to identify.

State Registration and Business Entity Requirements

When you hire an employee in a new state, the first compliance step is typically registering your business as a foreign entity in that state. "Foreign" in this context means a business formed in another state—it has nothing to do with international operations.

Registration requirements vary by state but generally include:

• Foreign qualification with the Secretary of State. This establishes your legal right to conduct business in the state. You will need to file an application, designate a registered agent in the state, and pay a filing fee (typically $100–$800 depending on the state).
• State tax registration. You must register with the state tax agency to withhold income taxes from your employee's wages. In states with no income tax (Texas, Florida, Washington, Tennessee, Nevada, Wyoming, South Dakota, Alaska, New Hampshire), this step is not required for income tax but may still be necessary for other state-level taxes.
• State unemployment insurance registration. You must register with the state workforce agency and begin paying State Unemployment Tax Act (SUTA) contributions. This is separate from your federal FUTA obligations.
• New hire reporting. Federal law requires employers to report new hires within 20 days, but many states have shorter windows (some require reporting within 10 days). Reports are filed with the state's new hire reporting agency, not the IRS.
• Local registrations. Some cities and counties impose additional registration requirements, business license taxes, or local income taxes. Notable examples include New York City, Philadelphia, San Francisco, and Portland.

The timeline matters. Most states expect registration to be completed before or simultaneously with the first payroll. Retroactive registration is possible but exposes you to penalties for the period between the employee's start date and the registration date.

Tax Withholding and Nexus Obligations

Tax nexus is the legal concept that determines whether a state has the authority to impose tax obligations on your business. Having an employee working in a state almost always creates nexus—for income tax, sales tax, or both.

State Income Tax Withholding

The general rule is that you must withhold state income tax based on the state where the employee physically performs the work. This means:

• An employee working from home in Illinois pays Illinois state income tax, regardless of where your company is headquartered.
• An employee who works from two states (for example, lives in New Jersey but works two days per week in your New York office) may require withholding in both states.
• States with no income tax (TX, FL, WA, TN, NV, WY, SD, AK, NH) do not require income tax withholding.

Several states have reciprocity agreements that simplify multi-state withholding. For example, New Jersey and Pennsylvania have a reciprocity agreement: a Pennsylvania resident working in New Jersey only owes Pennsylvania income tax, and the New Jersey employer withholds for Pennsylvania instead. These agreements exist between various pairs of states, and knowing which ones apply to your employees can reduce both your administrative burden and your employees' tax filing complexity.

The IRS Publication 15 (Circular E) provides the federal framework for employer tax obligations, but state withholding rules are governed entirely by state law. Each state publishes its own withholding tables and filing schedules.

Corporate Income Tax and Sales Tax Nexus

Beyond payroll tax withholding, having employees in a state can create corporate income tax nexus (requiring your company to file a state corporate income tax return) and sales tax nexus (requiring you to collect and remit sales tax on sales to customers in that state). The rules for when an employee creates these types of nexus vary by state, but the trend since the 2018 South Dakota v. Wayfair Supreme Court decision has been toward broader nexus definitions. Consult with a tax advisor to understand the full tax implications of hiring in each new state.

Unemployment Insurance Across States

Federal Unemployment Tax Act (FUTA) contributions are straightforward: most employers pay 6% on the first $7,000 of each employee's wages, with a 5.4% credit for paying state unemployment taxes, resulting in an effective FUTA rate of 0.6%. But SUTA (State Unemployment Tax Act) obligations are where the complexity lives.

Each state sets its own:

• Tax rate. New employers typically receive a standard rate (often 2.7%–3.4%), which then adjusts based on the employer's claims history (experience rating). Rates can range from near-zero for employers with no claims history to over 10% for employers with significant claims.
• Taxable wage base. This is the amount of each employee's wages subject to SUTA tax. It varies dramatically: in 2025, Arizona's taxable wage base was $8,000, while Washington's exceeded $67,600. This means the actual SUTA cost per employee can differ by a factor of five or more between states.
• Filing frequency. Most states require quarterly filing, but deadlines and forms differ.

When an employee works in multiple states, the localization test (found in the Federal Unemployment Tax Act, 26 USC §3306(c)) determines which state's unemployment law applies. The test considers where the work is localized, the employee's base of operations, and where direction and control originate. For fully remote employees who work exclusively from their home, the answer is usually straightforward: the state where the employee lives and works.

Workers' Compensation Requirements

Workers' compensation insurance is mandatory in almost every state (Texas is the notable exception, where it is elective for most private employers). When you hire a remote employee in a new state, you must obtain workers' compensation coverage that satisfies that state's requirements.

Key considerations:

• State-specific policies. Workers' compensation is regulated at the state level, and policies must comply with the specific state's rules. Some states (Ohio, North Dakota, Washington, Wyoming) operate monopolistic state funds—you must purchase coverage from the state fund rather than a private insurer.
• Remote worker injuries. Workers' compensation covers injuries that occur in the course and scope of employment. For remote employees, this includes injuries that occur in the home workspace during working hours. The employer's liability does not decrease simply because the employee works from home.
• Classification codes. Premium rates are based on job classification codes. Remote clerical workers typically receive lower rates than field workers, but the rates vary by state. Adding a new state to your policy may change your overall premium structure.
• Proof of coverage. Some states require employers to post proof of workers' compensation coverage or provide certificates to employees. Several states also require employers to report coverage information to a central database.

The cost of non-compliance is steep. In California, failure to carry workers' compensation insurance is a criminal offense punishable by up to one year in county jail and fines of up to $100,000. The state can also issue stop-work orders that prevent the employer from conducting any business until coverage is obtained. Similar penalties exist in New York, Illinois, and many other states. The Department of Labor's workers' compensation page provides an overview of state-by-state programs and requirements.

Pay Transparency Laws by State

Pay transparency is one of the fastest-changing areas of employment law in the United States. A growing number of states and cities now require employers to disclose salary ranges in job postings, during the hiring process, or to current employees upon request. For employers hiring remote workers, these laws create obligations that extend beyond your home state.

The critical question for remote employers: does the law apply to remote positions that could be performed in the state, even if the employer is not based there? In several jurisdictions, the answer is yes.

• Colorado was the first state to require salary ranges in job postings (Equal Pay for Equal Work Act, effective 2021). The law applies to positions that could be performed in Colorado, including remote positions. Penalties include fines of $500–$10,000 per violation.
• New York City requires salary ranges in job postings for positions that can or will be performed in New York City (Local Law 32, effective 2022). This includes remote positions performed from NYC.
• Washington State requires salary ranges in job postings for positions that could be performed in Washington (SB 5761, effective 2023). Penalties include fines of $500 for first violations, escalating to $1,000 or more for repeated violations.
• California requires salary ranges in job postings for employers with 15 or more employees (SB 1162, effective 2023). The law applies to positions that may be filled in California, including remote positions.
• Illinois requires salary ranges in job postings effective 2025, with applicability to remote positions that could be performed in the state.
• Massachusetts enacted pay transparency requirements effective 2025, requiring salary ranges in job postings for employers with 25 or more employees.

For employers posting remote roles open to candidates nationwide, the practical implication is clear: you should include salary ranges in all remote job postings. The cost of compliance is zero (you already know what you plan to pay), while the cost of non-compliance is real and growing.

At-Will Employment Variations by State

Every US state except Montana follows the at-will employment doctrine, meaning employers can terminate employees for any reason not prohibited by law. But the practical application of at-will varies significantly because each state has carved out different exceptions.

The three common exceptions to at-will employment are:

• Public policy exception. You cannot fire an employee for reasons that violate the state's public policy (for example, firing an employee for filing a workers' compensation claim or for refusing to commit a crime). Most states recognize this exception, but the scope varies.
• Implied contract exception. Statements in employee handbooks, offer letters, or verbal assurances can create an implied contract that limits at-will termination. Roughly 38 states recognize this exception to varying degrees.
• Implied covenant of good faith and fair dealing. A smaller number of states (including California, Montana, and a handful of others) recognize an implied covenant that prohibits terminations made in bad faith or motivated by malice.

For multi-state employers, the practical takeaway is that your termination procedures must account for the most protective state in which you have employees. A termination process designed for Texas (which recognizes very narrow exceptions to at-will) may be legally insufficient for an employee in California (which recognizes all three exceptions plus extensive statutory protections). Your employee handbook should either be state-specific or default to the most protective standard across all states where you operate.

State Leave Laws and Benefits Portability

State-mandated leave laws are another area where multi-state employers must track multiple overlapping requirements. The federal Family and Medical Leave Act (FMLA) provides a baseline of 12 weeks of unpaid leave for eligible employees, but many states go further.

• Paid family and medical leave. California, New York, New Jersey, Washington, Massachusetts, Connecticut, Oregon, Colorado, Maryland, and Delaware have enacted paid family and/or medical leave programs. These are typically funded through employee payroll deductions, employer contributions, or both. Employers must register with the state program, make required contributions, and provide mandated notices to employees.
• Paid sick leave. At least 15 states and numerous cities require employers to provide paid sick leave. Accrual rates, usage caps, and carryover rules differ by jurisdiction. Arizona mandates one hour of paid sick leave per 30 hours worked; California mandates a minimum of 40 hours per year; New York mandates 40–56 hours depending on employer size.
• Voting leave, jury duty leave, bereavement leave, and domestic violence leave. Many states mandate various forms of protected leave that go beyond FMLA. The specific requirements, durations, and whether the leave is paid or unpaid vary by state. For a state-by-state breakdown of jury duty obligations specifically, see the jury duty leave policy template.

Benefits portability becomes an issue when employees relocate between states. If an employee moves from a state with a paid family leave program to a state without one, the employer must decide whether to continue offering equivalent benefits or to adjust the employee's benefits to match their new state. This decision should be documented in policy and communicated clearly to employees before relocation.

State-by-State Remote Hiring Compliance Comparison

The following table summarizes key compliance requirements across 15 states where US employers most frequently hire remote workers. Use this as a starting reference, then verify current requirements with each state's official resources before your first hire.

How to read this table: Each "Yes" represents an obligation you must satisfy before or at the time of your first hire in that state. The details behind each "Yes" differ substantially. California's paid sick leave mandate, for example, operates under entirely different accrual and usage rules than Illinois's mandate, even though both require 40 hours per year. Always consult the state's official labor department resources for current requirements.

Building a Multi-State Compliance Process

Rather than treating multi-state compliance as a series of one-off research projects, build a repeatable process that your HR team follows every time you hire in a new state. The process should include the following stages:

Stage 1: Pre-Hire State Assessment

Before extending an offer to a candidate in a new state, complete a state assessment that answers these questions:

• Does the state have income tax? If yes, what are the withholding registration requirements and deadlines?
• What is the SUTA registration process, and what is the new employer rate?
• Is workers' compensation mandatory? If yes, is the state monopolistic (state fund only) or competitive (private insurers permitted)?
• What state-specific employment laws apply (minimum wage, overtime, leave mandates, pay transparency, final paycheck timing)?
• Are there local (city/county) requirements in the employee's specific location?
• Does hiring in this state create corporate income tax or sales tax nexus?

Document the answers in a state compliance profile that your team can reference for future hires in the same state. You should not be re-researching California's requirements every time you hire a second, third, or tenth employee there.

Stage 2: Registration and Setup

Complete all required registrations before the employee's first payroll:

• File foreign entity qualification with the Secretary of State (if required).
• Register for state tax withholding with the state revenue department.
• Register for SUTA with the state workforce agency.
• Obtain or extend workers' compensation coverage to include the new state.
• Update your payroll system to handle the new state's withholding tables, filing schedules, and local taxes.
• File new hire reports within the state's required timeframe.

Stage 3: Policy and Documentation Updates

Update your employment policies to cover the new state:

• Create or update the employee handbook with state-specific addenda covering leave, pay, termination procedures, and required notices.
• Distribute required state notices (many states require employers to provide written notices about wages, workplace safety, anti-harassment policies, and other topics at the time of hire).
• Update your offer letter templates to include state-specific disclosures.
• Review your benefits plan documents to confirm coverage extends to the new state.

Stage 4: Ongoing Compliance Monitoring

Employment law changes constantly. States pass new legislation, adjust minimum wages, modify leave programs, and update tax rates on different schedules. Build a quarterly review process that checks for changes in every state where you have employees. Subscribe to state labor department newsletters, work with an employment attorney who tracks multi-state issues, and maintain a compliance checklist that your team reviews and updates on a regular cadence.

For a deeper discussion of remote work legal requirements, see our guide on remote work legal compliance in the US.

Common Mistakes Employers Make in Multi-State Hiring

Having worked with employers of all sizes as they expand their remote workforce, the same mistakes appear repeatedly. Avoiding these will save you significant time, money, and legal exposure.

1. Applying Home-State Rules Everywhere

The most common mistake is assuming that your home state's employment laws apply to all your employees, regardless of where they work. They do not. An employee in California is protected by California law, not by the law of your headquarters state. This means California's overtime rules (daily overtime after 8 hours, not just weekly overtime after 40 hours), California's meal and rest break requirements, and California's final paycheck rules (due immediately upon termination) all apply—even if your company is based in a state with none of those requirements.

2. Delaying Registration Until Audit

Some employers adopt a "wait and see" approach, reasoning that they will register in a state only if they get caught or audited. This strategy backfires for three reasons: penalties and interest accrue from the date the obligation began (not the date of discovery), retroactive compliance is more expensive and time-consuming than prospective compliance, and willful failure to register can convert civil penalties into criminal liability in some states.

3. Misclassifying Employees as Contractors

Using independent contractor agreements to avoid multi-state employment obligations is not a compliance strategy. It is a violation. The IRS, Department of Labor, and state agencies actively pursue misclassification cases, and the penalties include back payment of wages, overtime, benefits, taxes, interest, and fines. California's ABC test (codified in AB5) presumes that a worker is an employee unless the hiring entity can demonstrate all three prongs of the test are met, and several other states have adopted similarly strict tests.

4. Ignoring Local Ordinances

State-level compliance is necessary but may not be sufficient. Cities and counties in several states impose additional requirements that go beyond state law. Philadelphia has its own minimum wage, paid sick leave ordinance, and wage theft protections. San Francisco has its own Health Care Security Ordinance. Seattle has its own Secure Scheduling Ordinance for certain industries. If your remote employee lives in a city with local employment ordinances, you must comply with both the state and local requirements.

5. Failing to Update Policies When Employees Relocate

Remote employees move. An employee who was hired in Texas may relocate to Colorado without considering the compliance implications for their employer. If you do not have a policy requiring employees to notify you before relocating to a new state, you may be unknowingly out of compliance. Build relocation notification requirements into your employment agreements and remote work policy.

Special Considerations for Growing Companies

Threshold-Based Laws

Many employment laws activate at specific employee-count thresholds. FMLA applies to employers with 50 or more employees. California's pay transparency law applies to employers with 15 or more employees. The ADA applies to employers with 15 or more employees. As you grow, new obligations activate at each threshold, and these counts typically include all employees across all states—not just employees in the state imposing the requirement.

Track your total employee count and your per-state employee count against known thresholds. Build alerts into your HR system that flag when you are approaching a threshold so you can prepare for the new obligations before they take effect. Treegarden's AI-powered tracking can help you monitor candidate pipelines and headcount changes that may trigger new compliance requirements.

Benefits Equity Across States

One practical challenge of multi-state employment is maintaining benefits equity. If your California employees receive paid family leave through the state program and your Texas employees do not have access to any comparable program, you face a potential equity issue. Some employers address this by offering company-funded benefits that fill the gaps in states without mandated programs. Others accept the variation and document the state-by-state differences in their benefits guides. Neither approach is wrong, but the decision should be intentional, documented, and communicated transparently.

International Considerations

If your remote workforce includes employees outside the United States, the compliance requirements multiply further. Our guide on hiring international employees covers the additional considerations for US companies employing workers outside the country.

Quick-Reference Compliance Checklist for New-State Hires

Use this checklist every time you hire your first employee in a new state. Complete each item before the employee's first day of work or first payroll, whichever comes first.

1. Foreign entity registration — File with the state's Secretary of State and designate a registered agent.
2. State tax withholding registration — Register with the state revenue department and set up withholding in your payroll system.
3. SUTA registration — Register with the state workforce agency for unemployment insurance contributions.
4. Workers' compensation coverage — Obtain or extend coverage to satisfy the new state's requirements.
5. New hire reporting — File within the state's required timeframe (typically 10–20 days).
6. Employee handbook update — Add state-specific addenda for leave, pay, termination, and required notices.
7. Required state notices — Distribute all mandatory notices at the time of hire.
8. Pay transparency compliance — Verify job postings include salary ranges if the state requires it.
9. Local ordinance review — Check for city/county requirements in the employee's specific location.
10. Benefits plan review — Confirm health, retirement, and leave benefits extend to the new state.
11. Offer letter and agreement updates — Include state-specific disclosures, arbitration provisions (if applicable), and non-compete/non-solicitation terms that comply with the state's rules.
12. Compliance calendar setup — Add the new state's filing deadlines, minimum wage update dates, and legislative session schedule to your compliance calendar.

Official Resources and References

Reliable compliance starts with authoritative sources. The following resources should be your primary references when researching state-specific requirements:

• US Department of Labor — State Labor Laws: Minimum wage, overtime, and wage and hour resources organized by state.
• IRS Publication 15 (Circular E): Federal employer tax guide covering withholding, depositing, and reporting requirements.
• DOL Unemployment Insurance: Federal overview of unemployment insurance, including links to state workforce agencies.
• State Secretary of State websites: Foreign entity registration requirements and forms (search "[state name] Secretary of State business registration").
• State revenue department websites: Income tax withholding guides, registration forms, and filing schedules.

Frequently Asked Questions

Do I need to register my business in every state where I have a remote employee?

In most cases, yes. When you hire an employee in a new state, you typically need to register as a foreign entity with that state's Secretary of State, register with the state tax agency for income tax withholding, register with the state unemployment insurance agency, and obtain workers' compensation coverage that satisfies that state's requirements. The exact requirements vary by state, and some states have de minimis thresholds, but the safest approach is to assume registration is required and verify exceptions on a state-by-state basis.

Which state's employment laws apply to a remote worker?

Generally, the employment laws of the state where the employee physically performs the work apply. This means if your company is headquartered in Texas but your remote employee works from California, California's employment laws—including its stricter overtime rules, meal and rest break requirements, and pay transparency mandates—apply to that employee. Some states also have laws that follow the employee regardless of where the employer is based.

How do I handle tax withholding for remote employees in multiple states?

You must withhold state income tax based on the state where the employee works. If an employee works in a state with no income tax (such as Texas, Florida, or Washington), you do not withhold state income tax for that employee. For employees who split time between states, you may need to withhold in multiple states based on the proportion of work performed in each. Some states have reciprocity agreements that simplify this. Consult IRS Publication 15 and each state's withholding guidance for specific rules.

What are the penalties for not complying with multi-state hiring rules?

Penalties vary by state and type of violation but can be severe. They include back taxes plus interest and penalties from state tax agencies, fines for failure to carry required workers' compensation insurance (which can reach $100,000 or more in states like California), lawsuits from employees for unpaid wages or benefits under that state's labor laws, and loss of the right to do business in that state. In extreme cases, officers of the company can face personal liability for certain tax and employment violations.

Do I need to follow pay transparency laws if my company is not based in that state?

If the law applies to remote workers, yes. Colorado's Equal Pay for Equal Work Act, for example, requires salary range disclosure in job postings for positions that could be performed in Colorado—regardless of where the employer is headquartered. New York City, Washington State, California, and several other jurisdictions have similar requirements. If you are posting a remote role open to applicants in those states, you must comply with their pay transparency laws.

Can I just use independent contractors instead of employees to avoid multi-state compliance?

Misclassifying employees as independent contractors to avoid compliance obligations is illegal and carries significant penalties. The IRS, Department of Labor, and state agencies actively investigate misclassification. Penalties include back payment of wages, overtime, benefits, and employer-side taxes, plus fines and interest. The classification depends on the actual nature of the working relationship, not on what you call it in a contract. Each state has its own classification test, and some (like California's ABC test) are stricter than the federal standard.

How do unemployment insurance requirements work for remote employees?

You generally must pay State Unemployment Tax Act (SUTA) contributions in the state where the employee performs the work. If the employee works in multiple states, a localization test determines which state's unemployment insurance applies. The primary factors are where the work is localized, the employee's base of operations, and where direction and control originate. SUTA tax rates and wage bases vary significantly by state, so multi-state employers should track these obligations carefully.

What tools can help manage multi-state remote hiring compliance?

An applicant tracking system like Treegarden can help you track candidate locations, flag state-specific requirements during the hiring process, and maintain documentation. For ongoing compliance, you will also need a multi-state payroll provider that handles state tax registration and withholding, a workers' compensation policy that covers all states where you have employees, and access to employment law resources for each state. Building a compliance checklist for each state before your first hire there is the most reliable way to avoid gaps.