Contractor Or Employee? The Classification Test That Trips Up Startups
Calling someone a contractor does not make them one. How federal and state tests actually work, the red flags auditors look for and what misclassification costs.

The contract says "independent contractor." The person works full time, uses a company laptop, sits in every standup and reports to a manager. In the eyes of most regulators, that person is an employee, whatever the paperwork says.
Startups classify early workers as contractors for understandable reasons. It is faster, there is no payroll to set up, and it keeps fixed costs low while the company is uncertain. But classification is determined by the reality of the working relationship, not by the label, and getting it wrong can produce back taxes, penalties and wage claims that surface at the worst possible time, often during due diligence for a financing or acquisition.
There is more than one test
The first thing to understand is that different agencies apply different standards, and a worker can be an employee under one even if they look like a contractor under another.
The IRS uses a common-law test focused on control. It groups the evidence into three areas: behavioral control (does the company direct how the work is done), financial control (does the worker have their own business expenses, invest in their own tools, and have the opportunity for profit or loss) and the relationship of the parties (are there benefits, is the work ongoing, is it a key part of the business). No single factor decides it. The IRS publishes guidance on each category, and either party can ask the agency for a formal determination by filing Form SS-8.
The Department of Labor applies an "economic reality" test under the Fair Labor Standards Act, asking whether the worker is economically dependent on the company or genuinely in business for themselves. The federal rule interpreting that test has been revised more than once in recent years, so check the department's current guidance rather than relying on an older summary.
States add another layer. Some, California among them, apply an "ABC" test for certain purposes, under which a worker is presumed to be an employee unless the company can show all three conditions, including that the work falls outside the usual course of the company's business. Under a test like that, a software engineer building the core product of a software company is very hard to classify as a contractor.
The red flags
Several patterns consistently point toward employee status. The person works only for you, on an open-ended basis. You set their hours and require them in recurring internal meetings. You provide their equipment and tools. They do the same work as your employees, in the core of your business. You pay them by the hour or month rather than by project or deliverable. They manage or are managed by your employees.
Patterns that point toward contractor status include a defined project with a defined end, multiple clients, the worker's own business entity and insurance, their own tools and methods, and payment against deliverables.
Watch for drift with former employees too. Converting someone from employee to contractor while they keep doing the same job, for the same manager, on the same schedule, is one of the clearest signals of misclassification.
What misclassification costs
If a worker is reclassified, the company can owe the employer share of payroll taxes it did not pay, along with penalties and interest, and potentially the income tax it should have withheld. Under wage laws, the worker may be owed overtime for hours over the federal and state thresholds, and in some states, expense reimbursement, paid leave and other employee benefits. State unemployment insurance agencies can assess back contributions, often after a former contractor files a claim.
There is also a financing cost. Investors' lawyers look for misclassification during diligence. A company with a team of long-term contractors doing core work may be asked to fix it before closing, at its own expense.
What to do now
List every person currently working for you who is not on payroll. For each, note how long they have worked with you, how many hours a week, whether they work for anyone else, who directs their work and whether they do the same job as an employee. Anyone who looks like an employee on that list should be discussed with an employment lawyer, and the cleanest fix is usually to convert them to employees going forward.
For genuine contractors, use a written agreement that describes a defined scope of work and deliverables, confirms they control how the work is done and includes intellectual property assignment, so the company owns what it paid for. Collect a Form W-9 before the first payment and issue the required information returns at year end.
Revisit the list every quarter. Relationships that start as a short project often drift into something that looks like full-time employment without anyone deciding it should.
This is general information, not legal advice. Speak to a qualified attorney in your jurisdiction before acting on any of it.
Sources
IRS — Independent Contractor (Self-Employed) or Employee?
U.S. Department of Labor — Misclassification of Employees as Independent Contractors




