Oklahoma Mechanical Business and Law

Oklahoma Mechanical Business and Law Exam: Complete 2026 Study Guide

You've put in the field hours. Now you need the license. Whether you're going for your HVACR contractor license, sheet metal, refrigeration, natural gas, process piping, or any other mechanical trade in Oklahoma, the Business and Law exam stands between you and that credential. It's 50 questions, 120 minutes, and you need a 70% to pass. This guide breaks down exactly what's on it, what to study, and how to prepare — including where to find Oklahoma Mechanical Business and Law exam questions to practice before test day. Start with our free practice exam to see where you stand right now.

Exam Overview

The Oklahoma Mechanical Business and Law exam is administered by PSI. Here's the fast version of what you need to know:

• Questions: 50 scored questions
• Time limit: 120 minutes
• Passing score: 35 out of 50 correct (70%)
• Format: Multiple choice
• Open book: Yes — you bring your own approved references
• Calculator: Allowed (silent, non-printing, non-programmable, no alphabetic keyboard)

This exam is required for a wide range of mechanical contractor and journeyman licenses in Oklahoma, including HVACR (limited and unlimited), refrigeration, sheet metal, natural gas, process piping, and limited residential mechanical work.

The exam is open book, but don't let that lull you. There's no time to look up every answer. You need to know the material and use your references to confirm or check specifics.

For registration details, visit the official exam bulletin.

Topics Covered on the Oklahoma Mechanical Business and Law Exam

Here's where the exam's 50 questions come from, ranked by weight:

Financial (8 questions) — Mechanics' and materialmen's lien rights, pre-lien notice requirements, lien priority and foreclosure, trust fund requirements, and business structure types. This is the heaviest topic on the exam. Know lien law cold.

Bidding and Estimating (10 questions) — Quantity take-off, labor cost and labor burden, overhead (project vs. company), markup and profit margin, bid documents and submission requirements. The second-largest section and very math-heavy.

Payroll and Payroll Taxes (6 questions) — FICA, federal income tax withholding, FUTA, payroll deposit schedules, and gross-to-net pay calculations.

Project Management and Supervision (7 questions) — Scheduling methods (bar chart, CPM), task sequencing, float time, project manager and superintendent roles, project life cycle phases.

Contracts (5 questions) — Elements of a binding contract, contract types (lump-sum, turnkey, cost-plus, etc.), payment terms, retainage, breach and liquidated damages, change orders.

Labor and Personnel (5 questions) — Lawful hiring practices, employment laws (FLSA, ADA), rules for hiring minors, Form I-9 and W-4 requirements.

Risk Management (4 questions) — Insurance types (CGL, property, auto, workers' comp), surety bond types and purposes, Oklahoma workers' comp requirements.

Licensing Requirements (5 questions) — License types and categories, qualifications, application and renewal procedures, bond and insurance requirements for mechanical contractors.

Sample Oklahoma Mechanical Business and Law Exam Questions

Here are five sample questions that reflect what you'll see. Give them a try — but we're not giving you the answers here. Head to our free practice exam to test yourself.

Question 1 — Payroll and Payroll Taxes

You are a mechanical contractor who has just hired your first three employees. You need to set up payroll and begin withholding federal income tax from their wages. What document must each employee complete so you can determine the correct amount of federal income tax to withhold from each wage payment?

A) Form SS-4
B) Form 941
C) Form W-2
D) Form W-4

Question 2 — Risk Management

Under Oklahoma workers' compensation law, every employer who has secured compensation must keep posted in a conspicuous place a notice that includes the name and address of the carrier and the ______ of the policy.

A) premium amount
B) effective start date
C) expiration date
D) policy number

Question 3 — Bidding and Estimating

Which of the following is an example of a company overhead expense rather than a project overhead expense?

A) Performance bonds for the project
B) Portable toilets at the job site
C) Temporary storage for the project
D) Office rent and accounting fees

Question 4 — Contracts

You are a mechanical contractor who has been asked by a building owner to handle the entire project from securing financing and land through design and completed construction. Which contracting method does this arrangement describe?

A) Partnering
B) Construction management
C) Turnkey
D) Single prime

Question 5 — Licensing Requirements

Permanent employees of a manufacturing facility are exempt from the Mechanical Licensing Act when performing mechanical work on their facility premises, provided the work does not violate any manufacturer specification or compromise any ______ standards and practices.

A) industry quality
B) environmental compliance
C) health or safety
D) building code

Know the answers? Not sure? That's exactly the point of practice. Take the free version to see how you do before you commit more time to any single topic.

What Types of Questions to Expect

A good Mechanical Business and Law study guide prepares you for the range of problems across every topic. Here's what our question bank covers — and what skills you'll be sharpening:

• Bidding and Estimating (70+ practice questions): Expect calculations — labor burden, overhead allocation, markup vs. margin, and reading bid documents. You need to know the difference between project overhead and company overhead without hesitating.
• Project Management and Supervision (27+ practice questions): Scheduling method comparisons, CPM terminology (float, critical path), and who does what on a job site (foreman vs. superintendent vs. owner's rep).
• Contracts (20+ practice questions): Contract element identification, matching contract types to project scenarios, retainage math, and understanding what constitutes breach vs. a change order.
• Financial (30+ practice questions): Lien filing deadlines, pre-lien notice requirements by party type, priority rules, trust fund obligations, and how business structure affects personal liability.
• Labor and Personnel (23+ practice questions): Spotting unlawful interview questions, applying FLSA and ADA rules, and knowing the documentation requirements for new hires — especially I-9 and W-4 rules.
• Risk Management (33+ practice questions): Bond type identification (bid, performance, payment, fidelity, maintenance), CGL policy components, and Oklahoma workers' comp posting and coverage requirements.
• Payroll and Payroll Taxes (29+ practice questions): FICA rates, FUTA calculation and deposit rules, withholding procedures, and gross-to-net pay walkthroughs with deductions.
• Licensing Requirements (37+ practice questions): License categories, renewal and continuing education rules, experience requirements by license type, and bond/insurance minimums for mechanical contractors.

Total practice questions available across all topics: 380+.

For serious prep, the full practice exam matches the real test — 50 questions, 120 minutes, same topic breakdown — and draws from that full pool so you get a different set each attempt. You'll also get a score breakdown by topic so you know exactly where to spend more time.

Study Materials

This is an open-book exam, so your references do double duty: study tools now, lifelines on test day.

Required References (bring your own copies):

• NASCLA Contractors Guide to Business, Law and Project Management (Basic 14th Edition) — this is your primary reference and where most business and law content originates
• State of Oklahoma Construction Industries Board Unofficial Administrative Rules & Courtesy Exam Study Aids Book
• Oklahoma Mechanical Licensing Act
• Oklahoma Mechanical Industry Regulations
• Oklahoma Fine Schedule
• Oklahoma Lien Law
• Oklahoma Workers' Compensation Act (or its Statutory Excerpts)

One important rule: If you download any reference from the internet, it must be spiral bound, hole-punched and placed in a binder, or stapled in the left-hand corner. References may be highlighted or tabbed with permanent tabs — but no written annotations.

Highly recommended supplies:

Sharpie Tank Highlighters — wide barrel, large ink supply, fluorescent colors, chisel tip. Great for marking key passages in your NASCLA guide and lien law sections. Let the ink dry before you close the book.

Redi-Tag Permanent Colored Tabs — 100 tabs in 5 colors. Use them to divide your references by topic: lien law, workers' comp, contract types, payroll. On exam day, you'll flip straight to what you need instead of hunting.

Tabbing your books before exam day is not optional — it's how you use the open-book format effectively.

Study Tips

Use the same format you'll be tested in. Our full practice exam is built to mirror the real PSI exam — same number of questions, same time limit, same topic breakdown. Practicing timed removes the surprise of pacing on test day. Untimed PDF reviews help you learn material; timed practice teaches you to perform under pressure.

Prioritize by question count. Financial (8 questions) and Bidding and Estimating (10 questions) together account for more than a third of the exam. If you're short on time, focus there first.

Tab your books before you walk in. Use colored tabs to mark lien law deadlines, payroll tax rates, contract definitions, and license requirement tables. The open-book format rewards preparation — not page-flipping.

Skim answer choices first. Before you read the question fully, scan the options. You're looking for the key term that signals which concept is being tested. The more you've practiced, the faster that term jumps out.

Know the math cold. Bidding, payroll, and FICA questions require calculation. Practice those on paper before exam day. A non-programmable calculator is allowed, but setup time eats minutes.

FAQs

How many questions are on the Oklahoma Mechanical Business and Law exam and how long do I have?
The exam has 50 scored questions and you have 120 minutes to complete it. That's about 2.4 minutes per question — enough time if you've prepared, tight if you haven't.

What is the passing score?
You need 35 correct out of 50 scored questions, which equals 70%. Every question is equally weighted, so no single topic can save you — you need solid coverage across the board.

How much does the exam cost?
The fee is $92 per examination portion. It's non-refundable and non-transferable, whether you're taking it for the first time or retesting.

How do I register?
First, get approved by the Oklahoma Construction Industries Board. After approval, you can register online or call PSI at (855) 834-8750. You must have state approval before you can schedule with PSI. Use the exam registration page to get started.

What happens if I fail?
After a first failure, you wait 30 days before retesting. After a second or subsequent failure, the wait is 90 days. That's months of delay — and another $92 fee. Pass it the first time.

Does my eligibility expire?
No. Once you're approved by the state, there's no expiration on your eligibility to test.

Is the exam open book?
Yes. You bring your own approved references. See the Study Materials section for the full list of what's allowed.

What references can I bring?
Approved references include the NASCLA Contractors Guide (Basic 14th Edition), the Oklahoma Mechanical Licensing Act, Oklahoma Mechanical Industry Regulations, Oklahoma Fine Schedule, Oklahoma Lien Law, the State of Oklahoma Construction Industries Board Unofficial Administrative Rules & Courtesy Exam Study Aids Book, and the Oklahoma Workers' Compensation Act or its Statutory Excerpts. Books may be highlighted and tabbed — no written notes.

Can I use a calculator?
Yes — a silent, non-printing, non-programmable calculator with no alphabetic keyboard and no paper tape printing capability.

What ID do I need?
One valid, non-expired, signature-bearing photo ID. Acceptable forms: state-issued driver's license, state ID, U.S. passport, military ID, alien registration card, or Canadian government-issued ID. The name must match your registration exactly.

Get Started

You know what's on the exam. You know what to bring. Now put in the reps. Start with the free practice exam to gauge where you're at — it's 10 questions, no account needed. When you're ready to go deeper, the full practice exam gives you 50 questions, timed at 120 minutes, drawn from all 8 topic areas, with a score breakdown by topic. That's where real preparation happens. Get your books tabbed, know your lien law deadlines, and walk in ready.