Before workers compensation existed, an injured worker's only path to recovery was to sue the employer and prove negligence—a slow, uncertain process. Workers compensation replaced that with a no-fault system that pays defined benefits automatically. This guide explains how the workers compensation "bargain" works, the statutory benefits employees receive, the two coverage parts of a workers compensation policy, how premiums are calculated, and the federal acts that cover workers outside the state systems.

The "exclusive remedy" bargain

Workers compensation is built on a historic trade-off sometimes called the "grand bargain." In exchange for guaranteed, no-fault benefits, employees give up the right to sue their employer for work-related injuries. This concept is called the exclusive remedy: workers compensation is the sole remedy an injured employee has against the employer.

• Employees gain – Prompt, certain benefits without having to prove the employer was negligent.
• Employers gain – Protection from most lawsuits and from unpredictable jury awards.
• No-fault – Benefits are paid regardless of who caused the injury (even if the worker was careless), as long as the injury is work-related ("arising out of and in the course of employment").

Exam tip: "Exclusive remedy" means the employee normally cannot sue the employer—they receive statutory benefits instead.

Statutory benefits

Because each state sets benefit levels by law, they are called statutory benefits. The amounts are fixed by statute, not negotiated. There are four main categories:

• Medical benefits – Cover all reasonable and necessary medical care for the work injury. These are typically unlimited (no dollar cap) and have no deductible for the worker.
• Disability income (lost wages) – Replace a portion of lost wages while the worker can't earn. Disability is classified four ways:
  • Temporary Total Disability (TTD) – Fully disabled but expected to recover.
  • Temporary Partial Disability (TPD) – Partially disabled, expected to recover.
  • Permanent Total Disability (PTD) – Permanently unable to work.
  • Permanent Partial Disability (PPD) – Permanent loss of a body part or function but able to do some work.
• Death benefits – Pay surviving dependents a portion of wages plus a burial/funeral allowance when a worker dies from a job injury.
• Rehabilitation benefits – Pay for medical and vocational rehabilitation to help an injured worker recover and return to suitable employment.

The two coverage parts: Coverage A and Coverage B

The standard workers compensation and employers liability policy has two distinct coverage parts. Knowing the difference is one of the most tested points in this topic.

Coverage A – Workers Compensation (statutory)

Coverage A pays all benefits the employer is required by the state's workers compensation law to provide. Because the obligation comes from statute, Coverage A has no dollar limit—the insurer pays whatever the law requires. It responds to the statutory benefits (medical, disability, death, rehab) described above.

Coverage B – Employers Liability

Coverage B covers the employer's liability for work-related injuries that fall outside the workers compensation statute—situations where an employee (or a third party) can still sue the employer. Unlike Coverage A, Coverage B has dollar limits. It responds to claims such as:

• Third-party-over actions – An injured worker sues a third party (e.g., a product maker), who then sues the employer.
• Consequential bodily injury – Injury to a family member stemming from the worker's injury.
• Dual-capacity and certain other suits not barred by exclusive remedy.

Exam tip: Coverage A = statutory, no limit; Coverage B = employers liability, has limits. Coverage B fills the gaps the exclusive remedy doesn't cover.

Classifications and premium basis

Workers compensation premiums are based on the risk of each type of work and the size of the payroll.

• Classifications – Every job type is assigned a classification code reflecting its hazard level. A roofer's code carries a much higher rate than a clerical worker's because the injury risk is greater.
• Premium basis = payroll – Premium is calculated per $100 of payroll for each classification. More payroll in a hazardous class means more premium.
• Estimated then audited – Premium starts as an estimate based on projected payroll and is adjusted by a premium audit at the end of the policy period to reflect actual payroll.

Experience modification

Larger employers' premiums are adjusted by an experience modification factor (the "mod" or EMR) that compares the employer's actual loss history to the expected losses for similar businesses.

• A mod of 1.00 is average.
• A mod below 1.00 (e.g., 0.85) means better-than-average loss experience and lowers the premium—a credit.
• A mod above 1.00 (e.g., 1.20) means worse-than-average experience and raises the premium—a debit.

Experience rating rewards safe employers and penalizes those with frequent or severe claims, giving businesses a financial incentive to prevent injuries.

Federal workers compensation acts

State systems don't cover everyone. Several federal acts protect specific groups of workers—exams frequently ask which act covers which worker.

• USL&HW is a true workers-comp-style benefits law for dock and harbor workers.
• FELA and the Jones Act are negligence-based—the worker must show the employer was at fault, but they can recover larger damages by suing.
• A simple memory aid: dock workers → USL&HW; railroad workers → FELA; ship crews/seamen → Jones Act.

Key terms at a glance

• Exclusive remedy – Workers comp is the employee's only remedy against the employer.
• Statutory benefits – Benefit amounts set by state law.
• Coverage A – Statutory workers comp benefits, no dollar limit.
• Coverage B – Employers liability, with dollar limits, for suits outside the statute.
• Classification code – Job-hazard category used for rating.
• Experience mod (EMR) – Factor adjusting premium up or down based on loss history.

Common exam traps

• Coverage A has no limit (statutory); Coverage B has limits (employers liability). Don't reverse these.
• Workers comp is no-fault—benefits are paid even if the worker caused their own injury, as long as it's work-related.
• Exclusive remedy bars most employee lawsuits against the employer; Coverage B handles the exceptions.
• Premium is based on payroll per $100, by classification, and is audited after the period.
• A mod below 1.00 lowers premium; above 1.00 raises it.
• Federal acts: USL&HW = dock/harbor workers; FELA = railroad workers; Jones Act = seamen/crew. FELA and Jones Act are negligence-based.

Quick recap

• Workers compensation is a no-fault system: employees get guaranteed statutory benefits and give up the right to sue (exclusive remedy).
• Statutory benefits include medical, disability income, death, and rehabilitation benefits.
• Coverage A pays unlimited statutory benefits; Coverage B (employers liability) has limits and covers suits outside the statute.
• Premium is based on payroll and job classification codes, then adjusted by a premium audit.
• The experience modification factor raises or lowers premium based on the employer's loss history.
• Federal acts fill gaps: USL&HW (dock/harbor), FELA (railroad), and the Jones Act (seamen).