Exam Cheat Sheet · Quick Reference

Oklahoma Plumbing Business and Law

Oklahoma  ·  PSI Services Contractor

Verified, not estimated. Every figure below is drawn from the official exam structure we maintain — question counts, passing standard and topic weighting. Practice questions are grounded in the source law with statute citations. We omit any figure we can't verify rather than guess at it.
Total questions
50
Passing score
75%
Exam time
120 min
Administered by
PSI Services Contractor
Format
Reference materials allowed

Oklahoma State Portion 50 questions

Bidding and Estimating 10 Q · 20%
Quantity take-off method and cost componentsLabor cost calculation and labor burdenOverhead calculation and markup for profit marginEthics in bidding: bid shopping, peddling, and riggingBid documents and bid submission requirementsEquipment cost determination: rent, lease, or buyEstimating pitfalls and accuracy considerationsJob cost recording system and cost code structureGeneral EstimatingBid
Project Management and Supervision 7 Q · 14%
Scheduling methods: calendar, bar chart, and critical path method (CPM)Scheduling process elements: task sequence, activity duration, contingency time, float time, and task time rangesProject manager and supervisory team roles: superintendent, foreman, materials expediter, and owner's representativeProject life cycle phases: pre-construction, construction, and job completion/closeoutTracking project progress: daily reports, status reports, and schedule monitoringBudget and cost controls: cost overruns, just-in-time materials delivery, and purchase order systemsScheduling and cash management: working capital, progress payments, and cash flow budgetingQuality assurance and value engineering: internal inspections, shop drawings, specifications, and customer satisfaction surveysProject Management and SupervisionGeneral Project OversightOversee BudgetOversee Quality Control +8 more
Contracts 5 Q · 10%
Required elements of a binding contract (offer, acceptance, consideration, competent parties, legal purpose)Types of construction contracts (lump-sum, unit-price, cost-plus, turnkey, fast-track)Contract provisions (price and payment terms, obligations of parties, supplemental conditions, boilerplate)Breach of contract (material vs. immaterial breach, liquidated damages, statute of limitations)Progress payments and retainageChange orders and contract modificationsAlternative dispute resolution (negotiation, mediation, collaborative law, arbitration)Subcontracting requirements and subcontract contentTerminologyRequired Elements/ComponentsContract TypesChange Orders +5 more
Financial 8 Q · 16%
Financial statements (balance sheet, income statement, statement of cash flows)Bookkeeping and the accounting cycleCash management and accounts receivable collectionFinancial ratios (liquidity, quick, debt, profitability, activity ratios)Contract accounting methods (completed contract, percentage of completion, cost comparison)Depreciation methods (straight line and accelerated/MACRS)Payroll accounting and net pay calculationsMethods of accounting (cash vs. accrual)Business Organization Characteristics, Advantages, and DisadvantagesBusiness Start-upAccounting MethodCash Flow Terminology +8 more
Labor and Personnel 5 Q · 10%
Oklahoma Workers' Compensation coverage requirements and securing compensationEmployer and subcontractor liability for workers' compensationAnti-discrimination and retaliation protections for employees filing workers' compensation claimsTypes and calculation of workers' compensation disability benefitsFair Labor Standards Act minimum wage, overtime, and recordkeeping requirementsEmployee vs. independent contractor classification under IRS guidelinesProhibited interview questions and lawful hiring practicesChild labor laws and restrictions on hiring minors in constructionADALabor StandardsRequirements for Non-citizens and/or Non-residentsWorkers' Compensation +4 more
Risk Management 4 Q · 8%
Types of insurance coverage for plumbing contractors (general liability, property, automobile, workers' compensation)Surety bond requirements for plumbing contractors under Oklahoma CIB rulesTypes of surety bonds (bid, performance, payment, maintenance, fidelity) and their purposesOklahoma workers' compensation obligations for employers and subcontractorsInsurance and bond requirements for subcontractorsCoverage gaps, overlaps, and selecting appropriate insurance policiesMiller Act and Construction Industry Payment Protection Act bonding requirements for federal projectsQualifying for a bond and the surety underwriting processInsuranceBonds
Payroll and Payroll Taxes 5 Q · 10%
Federal employment tax types: FICA, federal income tax withholding, and FUTAPayroll deduction calculations: gross pay, tax withholdings, and net payDeposit schedules: monthly, semiweekly, and daily thresholds and due datesEmployer tax forms: W-2, W-3, W-4, Form 941, and Form 940FUTA liability thresholds, quarterly deposit schedule, and Form 940 filingPenalties for late or incorrect payroll tax depositsPayroll recordkeeping requirements under FLSAForm 1099-MISC reporting for independent contractorsForms and Due DatesTaxes
Licensing Requirements 6 Q · 12%
License types and categories (unlimited vs. residential journeyman and contractor)Eligibility requirements and experience for journeyman and contractor licensureApprentice registration requirements and supervision ratiosExamination procedures, passing scores, and reexamination waiting periodsLicense duration, renewal procedures, and expiration datesContinuing education requirements for license renewalBond and insurance requirements for plumbing contractorsReciprocity, exam equivalency, and military/military spouse licensure provisionsRenewalRequired Insurance/Bonds

Key Distinctions

Company overheadvsProject overhead

Company overhead is the cost of doing business that cannot be directly linked to a specific project (office rent, accounting fees, taxes, telephone, legal fees, administrative labor), while project overhead is job-related (bonds, temporary storage, temporary office, security, utilities, dumpsters, portable toilets, plus indirect items like small tools and pickup trucks) and typically runs 5–10 percent of the total bid.

NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Add Company Overhead section (Page 6-6)
Bid peddlingvsBid shopping

Bid peddling is the subcontractor approaching the general contractor after award intending to lower the price submitted on bid day, whereas bid shopping is the general contractor seeking lower bids from other subcontractors.

NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Bid Peddling section (Page 6-2)
Bid riggingvsBid peddling

Bid rigging is collusion in which contractors coordinate their bids to fix the award outcome (forbidden by some state statutes on public projects), while bid peddling involves one subcontractor undercutting its own bid after the award.

NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Bid Rigging section (Page 6-2)
ArbitrationvsMediation

In arbitration a third-party arbitrator acts as a judge and renders an arbitral award that legally binds all parties (nearly all states adopted the federal Uniform Arbitration Act), while a mediator only facilitates dialogue and the parties set the terms with no binding decision.

NASCLA Contractors Guide (14th ed.), Chapter 7 — Arbitration
Named peril builder's risk insurancevsAll-risk builder's risk insurance

Named peril policies have narrower coverage and list only the perils covered (e.g., fire and lightning), while all-risk policies cover all perils not specifically excluded by the policy.

NASCLA Contractors Guide (14th ed.), Chapter 3 – Named Peril Builder's Risk Insurance section
Bank letter of creditvsSurety bond

A bank letter of credit is not a bond but a cash guarantee to the owner that can be converted to a payment — it is not a guarantee of performance and customarily covers only 5 to 10 percent of the contract rather than 100 percent.

NASCLA Contractors Guide (14th ed.), Chapter 3 – Bond Language section
Maintenance bondvsPerformance bond

Maintenance bonds often use a figure of 10 percent of construction cost as the required bond amount, while performance bonds are usually set at 100 percent of the contracted price.

NASCLA Contractors Guide (14th ed.), Chapter 3 (Managing Risk) — Bond Language section
Accrual methodvsCash-basis recognition

Under the accrual method (used by most construction businesses) income is recognized when the services occur and expenses when they are incurred, not when money is collected or bills are paid.

NASCLA Contractors Guide (14th ed.), Chapter 14 — Accrual Method section
Direct costsvsOperating (indirect) expenses

On the income statement, direct costs are those directly linked to a particular project (materials, subcontractor fees, permit fees, labor), while operating expenses such as office salaries, advertising, and warehouse rental are indirect.

NASCLA Contractors Guide (14th ed.), Chapter 2 — Income Statement section
Critical path method (CPM)vsCalendar and bar chart (Gantt) scheduling

CPM graphically illustrates the interdependent relationships of tasks, whereas calendar and bar chart methods do not show interdependencies or the impact of a delay on other tasks; calendar scheduling's advantage is linking tasks to specific dates such as deliveries, payment schedules, and vacations.

NASCLA Contractors Guide (14th ed.), Chapter 8 — Critical Path Method section
Free float timevsTotal float time

Free float is the time an activity can be delayed without impacting the early start of the next activity, while total float is leeway without delaying the overall project completion date; activities with zero float are critical activities.

NASCLA Contractors Guide (14th ed.), Chapter 8 — Float Time section
EmployeevsIndependent contractor

Under IRS guidelines (behavioral control, financial control, type of relationship), a worker who uses his own methods and tools, advertises to multiple companies, is paid a flat fee, and can realize a profit or loss is more likely an independent contractor rather than an employee.

NASCLA Contractors Guide (14th ed.), Chapter 14 — Employee vs. Independent Contractor Classification
SuperintendentvsForeman

The superintendent is the onsite supervisor over all daily operations (coordinating activities, tracking schedule and cost deviations, punch lists, records), while the foreman supervises specific areas by trade, such as rough carpentry or concrete installation; certifying progress payments belongs to the architect/engineer, not either one.

NASCLA Contractors Guide (14th ed.), Chapter 8 — Foreman section
Unlimited plumbing contractor license (OK)vsResidential plumbing contractor license (OK)

Per OAC 158:30-5-1(c) and (e), an unlimited plumbing contractor may engage in the plumbing business without category restriction, while a residential plumbing contractor is limited to detached one- or two-family dwellings and multiple single-family dwellings (townhouses) not more than three stories in height with a separate means of egress.

State Of Oklahoma, Construction Industries Board, OAC 158:30-5-1(c) and (e)
Project specificationsvsApplicable codes

When specifications and codes conflict, the contractor must follow the stricter of the two because codes are the minimum requirements by law.

NASCLA Contractors Guide (14th ed.), Chapter 6, Specifications paragraph, Bidding and Estimating chapter — Project Documents section (Page 48)

Key Terms

Addendum NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Bid Documents section (Page 6-1)
A document issued when changes are made to a bid package before bids are due; it becomes part of the bid documents and ultimately part of the contract when awarded.
Project manual NASCLA Contractors Guide (14th ed.), Chapter 7 — Contract Documents and Project Manual section
A central location for bid documents, contract provisions, technical specifications, and addenda.
Labor burden NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Labor Burden section (Page 6-4)
An addition of roughly 30 percent to labor cost covering Medicare and Social Security, federal and state unemployment insurance, workers' compensation, liability insurance, and company benefits — but not raw material costs.
Distribution code NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Job Cost Recording System section (Page 6-8)
In a job cost recording system, a one-letter code placed behind the activity classification code identifying the type of cost — Material (M), Labor (L), Equipment (E), Project Overhead (P) — e.g., 06200L for finish carpentry labor or 06200E for its equipment.
Project number (cost code structure) NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Job Cost Recording System section (Page 6-8)
A more complex project number may combine project type, year started, and sequence, such as R-22-01 for the first remodel project started in 2022.
Unit price method NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Other Methods of Estimating section (Page 6-7)
An estimating method that bundles all cost factors — labor, materials, equipment, and subcontractors — into a single unit price for the entire task (e.g., $2.00/sq ft × 2,000 sq ft = $4,000).
Conceptual estimate NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Other Methods of Estimating section (Page 6-7)
An estimate generally prepared by the architect using cost models from previous projects; the contractor's cost may differ substantially due to the project's unique characteristics.
Square-foot method NASCLA Contractors Guide (14th ed.), Chapter 6, Other Methods of Estimating section, Bidding and Estimating chapter — Other Methods of Estimating section (Page 53)
A quick estimating method that does not account for project specifics that affect cost, making it less accurate than other methods.
Preliminary estimate NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Preliminary Estimates section (Page 6-7)
The risky practice of quoting a price to a customer before accurate calculations can be made — quoting too high may lose the bid, too low may disappoint the customer.
Contingency time NASCLA Contractors Guide (14th ed.), Chapter 8 — Contingency Time section
Buffer time between tasks to protect against unforeseen delays; more is allotted for tasks subject to weather delays, custom work, and areas with limited access.
Just-in-time (JIT) delivery NASCLA Contractors Guide (14th ed.), Chapter 8 — Just-In-Time section
Timing material deliveries to arrive as materials are needed, keeping inventory costs low and reducing risk of theft or vandalism.
Value engineering NASCLA Contractors Guide (14th ed.), Chapter 8 — Value Engineering section
A project management approach aimed at understanding the owner's cost, quality, and time priorities to deliver a product of the highest value, often with owner incentives such as bonuses for cutting costs without sacrificing quality.
Material breach NASCLA Contractors Guide (14th ed.), Chapter 7 — Breach of Contract section
A serious violation of the contract — such as a contractor refusing to perform or complete a job, or an owner refusing to pay — that may void the contract and will most likely end up in litigation.
Indemnification NASCLA Contractors Guide (14th ed.), Chapter 7 — Provisions to Limit Risk section
A contract provision that absolves the indemnified party from any payment for losses and damages incurred by a third party, shifting liability to the other contracting party; indemnity more broadly is a way to transfer risk and provide exemption from loss.
Inland marine insurance NASCLA Contractors Guide (14th ed.), Chapter 3 — Inland Marine/Equipment Theft Insurance section
Property insurance covering goods in transit and projects under construction, which can be purchased to protect tools and equipment (an equipment floater is one type); motor truck cargo insurance is the inland marine coverage protecting against damaged or lost freight transported to and from the jobsite.
Contractor's protective public and property damage liability insurance NASCLA Contractors Guide (14th ed.), Chapter 3 (Managing Risk) — Other Types of Liability Insurance section
Supplemental coverage protecting a contractor who supervises subcontractors and is held liable for the subcontractors' actions causing personal injury or property damage, addressing exclusions in a standard CGL policy.
SUTA dumping NASCLA Contractors Guide (14th ed.), Chapter 3 (Managing Risk) — Unemployment Insurance section
The prohibited transfer of employees between businesses to obtain a lower unemployment compensation tax rate, subject to criminal and/or civil penalties under state law.
FUTA (Federal Unemployment Tax) NASCLA Contractors Guide (14th ed.), Chapter 14 — Federal Unemployment Tax (FUTA) section
A tax paid solely by the employer (not withheld from employees) and reported on Form 940; employers who pay state unemployment tax timely receive an offset credit toward FUTA, and deposits under $500 may be carried forward to the next quarter.
Employer Identification Number (EIN) NASCLA Contractors Guide (14th ed.), Chapter 14 — Employer Identification Number section
A 9-digit number issued by the IRS, formatted 00-0000000, used to identify the tax accounts of employers.
Workweek (FLSA) NASCLA Contractors Guide (14th ed.), Chapter 10 — Fair Labor Standards Act section
A period of 168 hours during seven consecutive 24-hour periods, which may begin on any day and hour established by the employer.
Continuing education credit hour (Oklahoma plumbing renewal) Oklahoma Plumbing Industry Regulations, OAC 158:30-9-4(b)(7)
Per OAC 158:30-9-4(b)(7), at least fifty (50) minutes of classroom instruction with a ten (10) minute break.
Residential journeyman plumber license (Oklahoma) State Of Oklahoma, Construction Industries Board, OAC 158:30-5-1(d)
Per OAC 158:30-5-1(d), a license entitling the holder to install plumbing for detached one- or two-family dwellings and multiple single-family dwellings (townhouses) not more than three stories in height with a separate means of egress.
Prime contractor workers' compensation liability (Oklahoma) Oklahoma Workers' Compensation Act Statutory Excerpts, Title 85A, Section 36
Under Title 85A, Section 36, if a subcontractor fails to secure the compensation required by the Act, the prime contractor is liable for compensation to the subcontractor's employees unless an intermediate subcontractor has workers' compensation coverage.
Contractor license by reciprocity (Oklahoma) Oklahoma Plumbing Industry Regulations, OAC 158:30-5-4(e)
Per OAC 158:30-5-4(e), a qualifying applicant from a state with a written contractor reciprocity agreement is first granted a journeyman license by reciprocity, then issued the contractor license upon passing the Oklahoma Business and Law portion of the contractor exam and satisfying bonding and insurance requirements.

Formulas to Know

Labor cost for a task (quantity take-off)Required Labor Hours per Task × Labor Rate = Labor Cost per Task (consider skill level, crew size, weather when setting hours)
Total material cost per category on a take-off sheetPrice per Unit × Number of Units Needed = Total Material Unit Cost (add a small waste contingency that varies by material and job specs)
Company overhead percentageTotal overhead costs from the previous year (from the income statement, part of administrative expenses) ÷ revenues (also from the income statement); averages generally 5–20 percent
Cost-based bid price covering direct costs plus overheadDirect Costs ÷ (1 − combined overhead %) — e.g., with 9% project + 11% company overhead = 20%, $100,000 ÷ 0.80 = $125,000
Markup added to direct costsStandard industry markup of 15% applied to direct costs (labor, material, project equipment, project overhead, subcontractors), adjusted for market and competition
Percentage of completion earningsProject Costs Incurred ÷ Total Estimated Costs = % Complete; % Complete × Contract Amount = Cumulative Earnings (e.g., $300,000 ÷ $1,000,000 = 30%; 30% × $1,500,000 = $450,000)
Straight-line depreciation (annual)(Initial Cost − Salvage Value) ÷ Useful Life in Years (e.g., ($24,000 − $4,000) ÷ 8 = $2,500/yr)
Net payGross Pay − Taxes & Deductions = Net Pay (Social Security, Medicare, federal/state income tax, plus insurance or 401K; e.g., $1,800 − $447.70 = $1,352.30)
Liquidated damagesPer-Day Contract Rate × Number of Days Late (e.g., $500 × 20 = $10,000); an owner suing for liquidated damages cannot also sue for actual damages
Liquidity (current) ratioCurrent Assets ÷ Current Liabilities (e.g., $26,400 ÷ $8,200 ≈ 3.22); greater than one indicates a positive liquidity position, and higher is better
Average collection period (activity ratio)Annual Revenues ÷ 365 = Sales per Day; Accounts Receivable ÷ Sales per Day = Average Collection Period (e.g., $730,000 ÷ 365 = $2,000; $60,000 ÷ $2,000 = 30 days)