If someone works for you and you pay them, assume they need to be covered from their first day, whether they work forty hours a week or four. Calling a part-timer an independent contractor does not usually change that: California uses the ABC test, and most part-time help does not pass it. Workers’ comp premium is generally based on payroll, so a part-time employee adds to the policy in proportion to what you pay them. Going without coverage exposes you to state penalties and to the full cost of an injury.
Do part-time employees need workers’ comp in California?
Yes. California’s requirement attaches to the employment relationship, not to hours. A weekend cashier, a student who works summers, a bookkeeper who comes in one afternoon a week and a holiday-season warehouse temp you hired directly are all generally employees who must be covered.
That includes your first hire. A business that has been a one-person operation needs a policy in force before the first part-time helper starts work — not at the end of the month, and not after their first paycheck clears. Workers’ comp insurance.
What about family members and owners?
Family members who work for the business and are paid are generally employees for workers’ comp purposes, the same as anyone else. Working for a relative does not, by itself, take someone outside the requirement.
There are narrow exceptions and elections, and they depend on the details:
- Sole proprietors and partners are generally not covered by their own policy unless they choose to be.
- Qualifying corporate officers, directors and LLC managing members may be able to waive their own coverage in writing.
- Certain household arrangements involving close family members in the home are treated differently.
Do not assume a family member is excluded because they are family. Ask before relying on it, and get any waiver done on the insurer’s form. Owners, officers and the no-employees situation.
Can I treat part-timers as independent contractors?
Usually not. California law presumes that a person who performs services for pay is an employee, and it uses the ABC test, written into state law in 2019, to decide otherwise. To treat someone as an independent contractor, the hiring business generally has to show all three:
- AThe worker is free from the business’s control and direction in performing the work, in contract and in fact.
- BThe work is outside the usual course of the hiring business.
- CThe worker is customarily engaged in an independently established trade, occupation or business of the same nature.
A part-time receptionist, server, stocker or crew member doing the work your business exists to do usually fails part B on its own. Some occupations and business-to-business arrangements have exemptions, but those come with their own conditions. Issuing a 1099 and paying in cash do not settle the question; misclassification can create back premium at audit and exposure under wage and hour law as well. Employment practices liability is worth a look if you manage a team.
Seasonal help, temps and staffing agencies
- Seasonal and short-term hires you put on your own payroll need coverage under your policy for the time they work.
- Workers supplied by a staffing agency or PEO are normally covered under that company’s workers’ comp. Get a certificate before they start, and confirm the agency is actually the employer of record.
- Day labor paid in cash is still payroll. Auditors look at cash disbursements and bank records, not just W-2s.
- Interns and volunteers are fact-specific. Paid interns are generally employees; unpaid arrangements and nonprofit volunteers have their own rules, so ask before assuming.
If you rely heavily on staffing, the agency’s coverage should be part of your vendor paperwork. How staffing firms are insured.
How part-time payroll affects the policy
Workers’ comp premium in California is generally calculated from payroll in each job classification, so a part-time employee adds premium roughly in proportion to their pay and the classification of their work. Policies usually start with an estimated payroll and are adjusted by audit after the term ends.
Two practical consequences. First, estimate honestly — underestimating part-time and seasonal payroll mostly moves the bill to the audit. Second, classify correctly. A part-time office worker and a part-time delivery driver can carry very different rates, and insurers set minimum premiums for small policies regardless of payroll.
What happens if I don’t carry it?
Operating without required workers’ comp is treated seriously in California. In general terms:
- State enforcement. The Labor Commissioner can issue stop orders that halt operations and assess penalties, and failing to carry coverage can be a criminal offense.
- The cost of the injury. If an uninsured employee is hurt, a state fund can pay the worker’s benefits and then pursue the employer to recover them.
- Lawsuits. An injured employee of an uninsured employer can generally sue in civil court, where the employer loses some of the protections workers’ comp normally provides.
- Contracts and licenses. Clients ask for certificates, and for contractors, CSLB requires proof of coverage or a valid exemption to keep a license active.
What to do now
- List everyone you pay, including part-time, seasonal, family members and anyone paid in cash or on a 1099.
- Test each 1099 worker against the ABC test honestly.
- Estimate annual payroll by type of work.
- Bind the policy before the next new hire starts.
- Post the required workers’ comp notice and give new employees the information the state requires.
- Collect certificates from staffing agencies and subcontractors.
Common questions
Do I need workers’ comp for one part-time employee in California?
Yes. California requires workers’ compensation for every employer with one or more employees, regardless of hours worked.
Do I need workers’ comp for seasonal or temporary workers?
Yes, if they are on your payroll. Workers placed by a staffing agency or PEO are normally covered by that company’s policy; get a certificate to confirm it.
Do family members who work for me need to be covered?
Generally, yes, if they are paid employees. Some owner, officer and household situations are treated differently, so confirm before excluding anyone.
Can I avoid workers’ comp by paying part-timers on a 1099?
Usually not. California presumes workers are employees and uses the ABC test. Part-time help doing the core work of your business generally does not qualify as an independent contractor.
What happens if a part-time employee is injured and I have no coverage?
You may face state stop orders and penalties, responsibility for the cost of the worker’s benefits, and a civil lawsuit in which you lose some of the protections workers’ comp would have provided.
General information about California workers’ compensation as of October 2026, not legal advice. Worker classification and coverage exceptions are legal questions; confirm your own situation with counsel or the Division of Workers’ Compensation. Coverage depends on underwriting and the terms, conditions and exclusions of the policy actually issued.