Law & Business · Module 2

Insurance and Bond Requirements

Lesson 5 of 8~20 minFree previewCurrent as of September 2026Leer en español

Know exactly which protections California requires of a plumbing contractor and which ones are business choices. Workers' compensation is required for any employee, and a lapse automatically suspends your license. The $25,000 contractor bond is required for every license and protects the public, not you. General liability insurance is required by CSLB only for LLC licensees, though home improvement contracts must tell the owner whether you carry it. This lesson also covers the 2028 change to the workers' compensation exemption and the everyday tools of certificates and additional insureds.

Key Takeaways

  • Every employer must secure workers' compensation, by insurance or state-approved self-insurance (Labor Code 3700).
  • A C-36 licensee with no employees may file an exemption with CSLB today; under current law that option ends for all licensees on January 1, 2028 (CSLB, B&P 7125).
  • If workers' compensation lapses, the license is automatically suspended from the date of the lapse (B&P 7125.2).
  • An uninsured employer faces a stop order, a penalty of at least $1,500 per employee, possible misdemeanor charges, and lawsuits by injured workers (Labor Code 3706, 3710.1, 3722, 3700.5).
  • The $25,000 contractor bond (B&P 7071.6) protects homeowners, certain property owners, employees owed wages and others listed in B&P 7071.5. The surety can collect from you.
  • CSLB requires general liability insurance only of LLC licensees ($1,000,000 aggregate for up to 5 persons listed, B&P 7071.19).
  • A home improvement contract must include notices telling the owner whether you carry commercial general liability and workers' compensation insurance (B&P 7159).

Why This Matters

CSLB's Law and Business study guide includes "Insurance and Liens," covering workers' compensation insurance and business insurance, and "Public Works," which includes bonding and insurance requirements. The key skill is separating what the law requires from what a smart contractor buys anyway, and knowing exactly what happens to the license when required coverage lapses.

Workers' Compensation: Required for Employees

  • The rule: every employer except the state must secure the payment of workers' compensation, either by insurance from a company authorized to write it in California or by a certificate of consent to self-insure from the Director of Industrial Relations (Labor Code 3700).
  • Timing: coverage must be in place before the first employee starts work, and CSLB must have your certificate on file, replacing any exemption (Labor Code 3700; B&P 7125).
  • No employees: under the current version of B&P 7125, a licensee with no employees may file an exemption with CSLB, certifying that it employs no one and is not otherwise required to carry coverage.
  • Classifications that cannot use the exemption: C-8 concrete, C-20 HVAC, C-22 asbestos abatement, C-39 roofing and D-49 tree service licensees must carry workers' compensation even with no employees (CSLB). The C-36 plumbing classification is not on that list today.
  • Coming change: under SB 1455 (2024), mandatory workers' compensation for all licensees, regardless of whether they have employees, takes effect January 1, 2028. Until then, licensees in the other trades can keep claiming the exemption if they have no employees (CSLB industry bulletin). Watch for further changes before that date.
  • Workers' compensation also shows up in your contracts: a home improvement contract must contain a workers' compensation notice stating either that the contractor has no employees and is exempt, or that it carries workers' compensation insurance for all employees (B&P 7159).

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