Business Law

CSLB Law & Business Exam: The Topics That Win Points

The Law & Business exam is the same for every CSLB classification. Here are the topics that produce the most exam questions — and the fastest way to lock them in.

6 min read · June 13, 2026

CSLB Law & Business Exam: The Topics That Win Points

Every CSLB classification requires the same Law & Business exam. 115 questions, 3.5 hours, 73% to pass.

Section weights

  • Business organization & licensing — 12%
  • Contracts & bidding — 16%
  • Employment requirements — 16%
  • Safety (Cal/OSHA) — 14%
  • Public works & prevailing wage — 8%
  • Insurance & bonds — 10%
  • Financial management — 14%
  • Lien laws & collections — 10%

High-yield topics

  1. Mechanic's liens — deadlines, preliminary notice, foreclosure timelines
  2. Home Improvement Contract rules — down payment limits, required language
  3. Workers' comp thresholds and exemptions
  4. Independent contractor vs employee (ABC test)
  5. Cal/OSHA IIPP requirements

Quick wins

Memorize these numbers — they appear nearly every exam:

  • $500 — threshold for needing a license
  • 10% or $1,000 — max home improvement down payment
  • 20 days — preliminary notice deadline
  • 90 days — mechanic's lien recording deadline after completion

Study tip

Flash-card every dollar amount, percent, and day count in the curriculum. ~30% of Law & Business questions come down to remembering one specific number.

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FAQ

Frequently asked questions

Is Law & Business the same for every contractor license?

Yes. The same Law & Business exam applies to every CSLB classification (B, C-10, C-36, etc.).

How many questions are on the Law & Business exam?

115 multiple-choice questions in 3.5 hours, with a passing score of 73%.