Comparison
Workers' Comp vs. State Disability Insurance: How They Differ
Workers' compensation only pays when a job causes the injury or illness. State disability insurance, required in a handful of states such as California, New Jersey, and New York, pays partial wages for any qualifying non-work-related disability or pregnancy leave, funded mostly through employee payroll deductions.
Workers' compensation pays medical care and wage replacement only when an injury or illness arises out of and in the course of employment. Benefits typically include full coverage of reasonable and necessary medical treatment, roughly two-thirds of lost wages up to a state maximum, permanent disability payments, and death benefits for dependents. The employer pays 100% of the workers' comp premium, and coverage is required in nearly every state once a business has employees.
State disability insurance (sometimes called temporary disability insurance, or TDI) is a different program that a small number of states require, including California, New Jersey, and New York, historically alongside Hawaii and Rhode Island. It pays a portion of wages to an employee who cannot work because of any qualifying non-work-related illness, injury, or pregnancy-related leave, regardless of whether the job caused it. These programs are funded mainly through employee payroll withholding rather than an employer's insurance budget, and several states have since added related paid family and medical leave programs funded the same way.
The options
Workers' Compensation
Covers medical care and partial wage replacement only when an injury or illness is caused by the job.
Pros
- Paid entirely by the employer, at no direct cost to the employee
- Covers reasonable and necessary medical treatment for the covered injury
- Includes permanent disability and death benefits
- Required in nearly every state once you have employees
Cons
- Only applies to work-related injuries or illnesses
- Does not cover pregnancy, off-the-job accidents, or non-occupational illness
- Benefit eligibility can be disputed based on whether the job actually caused the condition
Best for
- Any employer with W-2 employees
- Claims involving an on-the-job accident or occupational illness
State Disability / TDI Insurance
Required in a small number of states, this pays wage replacement for any qualifying non-work-related disability, funded mainly through payroll withholding.
Pros
- Pays benefits regardless of whether the disability is work-related
- Commonly used for pregnancy and childbirth-related leave
- Established in states including California, New Jersey, and New York
- Often paired with a related state paid family leave benefit
Cons
- Only required in a handful of states
- Usually funded by employee payroll withholding, not the employer's insurance budget
- Benefit duration and wage-replacement percentage are capped and vary by state
Best for
- Employees in a mandatory-SDI state with an off-the-job injury, illness, or pregnancy
- Employers in California, New Jersey, or New York managing state payroll withholding requirements
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Side by side
| Feature | Workers' Compensation | State Disability / TDI Insurance |
|---|---|---|
| What it covers | Only work-related injury or illness | Any qualifying non-work-related disability |
| Who pays the premium | The employer | Primarily the employee, via payroll deduction (varies by state) |
| States that require it | Nearly all states, once you have employees | A handful of states, including California, New Jersey, and New York |
| Covers pregnancy/childbirth leave | No | Yes, in states with the program |
| Typical wage replacement | About two-thirds of wages, up to a state maximum | A set percentage of wages, up to a state maximum, for a limited number of weeks |
| Administered by | A private carrier or a state workers' comp fund | A state agency or an approved private/self-insured plan |
| Medical treatment covered | Yes, fully for the covered injury | Not directly; it is a wage-replacement benefit |
The bottom line
Workers' comp and state disability insurance answer different questions: did the job cause this, or not? An employee hurt on the job in a state-disability state will typically still be routed to workers' comp, since SDI/TDI programs generally exclude conditions that workers' comp already covers. Employers operating in California, New Jersey, New York, or another state with a similar program should understand both obligations, since payroll withholding for state disability is handled separately from the workers' comp premium. Compare your specific state's requirements rather than assuming one policy covers every type of leave.
Frequently asked questions
Can an employee collect both workers' comp and state disability benefits at once?
Generally no. State disability programs are designed to exclude work-related conditions that workers' compensation already covers, so an employee typically receives one benefit or the other for the same injury.
Does workers' comp cover pregnancy leave?
No. Pregnancy and childbirth are not work injuries, so that leave is handled through a state disability or paid-family-leave program where one exists, not workers' compensation.
Is state disability insurance the same as workers' comp?
No. State disability insurance covers non-work-related disabilities and is usually funded by employee payroll deductions, while workers' comp covers only work-related injuries and is paid for by the employer.
Do all states have a state disability insurance program?
No. Only a small number of states have historically required one; check your specific state's requirements, since newer paid family and medical leave programs in other states work somewhat differently.
Who administers state disability insurance?
It depends on the state; some run it through a state agency, while others allow approved private or self-insured plans.
Last reviewed · Reviewed by Provident Financial Group licensed agents
Compare up to 10 carriers in minutes.
One application goes out to every carrier we can access for your class of business. You get a ranked comparison you can review and purchase online — with a licensed agent available whenever you want one.
Mon–Fri, 8:00am–6:00pm ET · Independent agency licensed in 23 states