You've found someone to do the work. Maybe it's a developer to build your app, a designer for your rebrand, or a marketing strategist for a product launch. Before you send over a contract, you need to answer one question that has serious legal and financial consequences: is this person an employee or an independent contractor?
Get it wrong, and you're looking at tax penalties, back-pay claims, benefits liability, and potential lawsuits — not from the worker, but from government agencies that enforce classification rules aggressively. The IRS alone collected over $7 billion in employment tax penalties in recent years, much of it from misclassification.
This guide breaks down how to determine the correct classification, which contract to use, and what each agreement must include.
Why Classification Matters
The distinction between employee and contractor isn't a formality. It determines:
- Tax obligations. Employers withhold income tax, Social Security, and Medicare for employees. Independent contractors handle their own taxes, and the business issues a 1099 instead of a W-2.
- Benefits and protections. Employees may be entitled to health insurance, retirement plans, unemployment insurance, workers' compensation, overtime pay, and minimum wage protections. Contractors receive none of these.
- Liability. Businesses are generally liable for the actions of employees performed within the scope of their work (respondeat superior). Contractor liability typically stays with the contractor.
- Termination rights. Employees in at-will states can be terminated without cause, but may have wrongful termination claims if fired for discriminatory reasons. Contractor agreements end according to the termination clause in the contract.
Calling someone a "contractor" in the agreement doesn't make them one. Courts and agencies look at the actual working relationship, not the label on the document.
The Classification Tests
Three major frameworks determine worker classification in the United States. Other jurisdictions have their own tests, but the principles are similar.
The IRS Common Law Test
The IRS evaluates three categories:
Behavioral control — Does the business control how the worker performs the job?
- Employee indicators: set work hours, required training, specific methods prescribed, step-by-step instructions
- Contractor indicators: worker chooses their own methods, sets their own schedule, receives minimal instruction beyond the desired outcome
Financial control — Does the business control the economic aspects of the work?
- Employee indicators: company-provided tools and equipment, reimbursed expenses, guaranteed regular pay
- Contractor indicators: worker invests in their own tools, can profit or lose money, invoices for completed work, has unreimbursed business expenses
Relationship type — What is the nature of the arrangement?
- Employee indicators: written employee benefits, indefinite relationship, work is a key activity of the business
- Contractor indicators: written contract defining independent status, project-based engagement, worker provides services to multiple clients
The ABC Test
Used by many states (including California under AB5), this is stricter:
A worker is an employee unless the hiring entity proves all three:
- (A) The worker is free from control and direction in performing the work
- (B) The work is outside the usual course of the hiring entity's business
- (C) The worker is customarily engaged in an independently established trade of the same nature
Under this test, a software company hiring a freelance developer to build features for its core product would likely fail prong B — the development work is within the company's usual course of business.
The Economic Reality Test
Used by the Department of Labor for wage and hour claims, this test asks: is the worker economically dependent on the business, or in business for themselves?
Factors include permanency of the relationship, degree of control, the worker's opportunity for profit or loss, and the worker's investment in equipment or materials.
When to Use an Employment Contract
Use an employment contract when:
- You control how the work is done, not just the outcome
- The person works primarily or exclusively for your company
- You provide the tools, workspace, and training
- The relationship is ongoing with no defined end date
- The work is central to your business operations
- You set the schedule and require attendance at specific times
An employment contract should include:
- Job title, duties, and reporting structure
- Compensation (salary, hourly rate, bonuses, equity)
- Benefits (health insurance, PTO, retirement)
- Work schedule and location expectations
- Confidentiality obligations
- Non-compete or non-solicitation terms (where enforceable)
- Intellectual property assignment
- Termination conditions and severance terms
- At-will employment acknowledgment (if applicable)
When to Use an Independent Contractor Agreement
Use a freelance contract or service agreement when:
- You define what needs to be delivered, but the worker decides how
- The engagement is project-based with a defined scope and timeline
- The worker provides their own tools and workspace
- The worker serves multiple clients
- The worker has their own business entity (LLC, sole proprietorship)
- You're paying for a deliverable, not for hours worked
An independent contractor agreement should include:
- Scope of work and deliverables
- Payment terms, schedule, and invoicing process
- Project timeline and milestones
- Intellectual property ownership and assignment
- Confidentiality and non-disclosure terms
- Indemnification and liability limits
- Termination provisions and kill fee
- Independent contractor status acknowledgment
- Tax responsibility statement (contractor handles own taxes)
The Gray Areas
Some situations genuinely fall between the two categories. Here's how to handle the most common ones:
Long-term contractors. A contractor who works for you exclusively for 18 months starts looking like an employee to auditors. Mitigate this by ensuring the contractor maintains other clients, invoices irregularly (not biweekly like payroll), and controls their own methods.
Part-time specialists. A bookkeeper who comes in two days a week, uses your software, and follows your procedures is likely an employee — even if they work part-time. The number of hours doesn't determine status; the nature of the relationship does.
Remote workers. Working remotely doesn't automatically make someone a contractor. If you control their schedule, require attendance at meetings, and direct their daily tasks, remote employees are still employees.
Agency workers. When you hire through a staffing agency, the agency is typically the employer. When you hire an independent agency (design firm, consulting practice) for a project, they're a contractor. The distinction depends on who controls the worker's day-to-day activities.
Protecting Your Business
Regardless of classification, take these steps to protect your business:
- Document the relationship accurately. Use the correct contract type. Include a classification acknowledgment clause.
- Don't over-control contractors. If you need to dictate how the work is done, hours worked, and tools used, you need an employee — not a contractor with employee-like restrictions.
- Keep records. Maintain copies of contracts, invoices, and 1099s. If classification is challenged, contemporaneous documentation is your best defense.
- Review periodically. Relationships evolve. A project-based contractor who gradually becomes embedded in your team may need to be reclassified.
- Get jurisdiction-specific advice. Classification rules vary significantly by state and country. What's permissible in Texas may be illegal in California.
Choose the Right Contract
The contract you use should match the real working relationship — not the one you wish you had. Misclassification penalties far exceed the cost difference between employees and contractors.
If you're hiring a contractor, create a freelance contract or service agreement on Contract.diy with the proper scope, payment, and classification terms built in. If you're bringing on an employee, start with an employment contract that covers compensation, duties, and legal protections for both parties.
Not sure which you need? Our contract glossary covers every term referenced in this guide, and you can browse all contract types to find the right fit.