- How the Ten Content Areas Were Built
- Exam Format and What It Means for the Domains
- Domains 1 and 8: Discrimination and the ADA
- Domains 2 and 5: Applications, Interviews, Screening and Selection
- Domains 3 and 4: Contracts and Employer Definitions
- Domains 6, 7, 9 and 10: Temp-Specific Laws, Leave, Drug Testing, Joint Employer
- Registration, Fees and the Eligibility Wrinkle
- Sequencing the Domains in Your Prep
- After You Pass: Renewal Mechanics
- Frequently Asked Questions
- The ten CTS content areas are preparation topics drawn from NAPS materials, not an official weighted exam blueprint.
- The exam has 150 questions in 2 hours, and 113 correct answers are required.
- Case-based multiple-choice items mean you must apply discrimination, ADA and joint-employer rules to staffing scenarios.
- Registration costs $300 for NAPS members or $600 for nonmembers, including the legal manual, exam and certificate.
How the Ten Content Areas Were Built
The Certified Temporary-Staffing Specialist (CTS) credential is administered by the National Association of Personnel Services (NAPS). Unlike many professional exams, NAPS does not publish a formal weighted blueprint that says "Domain 3 is 14% of your score." What it does publish is a set of preparation topics: an FAQ lists the explicit CTS topics, and the description of the Certified Temporary Staffing Specialist Manual adds more. Combine those two public sources, remove the overlaps (discrimination and contracts appear in both), and you get the ten content areas used in this guide.
That distinction matters for how you study. Because the areas are unweighted, you cannot ration your time by percentage. You need working command of all ten, and you should expect the exam to blend them, since a single scenario about a temp worker with a medical condition can touch discrimination law, the ADA, joint employment and contract language at once. If you want the broader picture before diving into the domains, the overview of what CTS certification is covers the credential itself, and the CTS study guide covers pacing.
Exam Format and What It Means for the Domains
NAPS administers the examination online through its Certification Center. An optional Certification Immersion Class (CIC) offers a paper-and-pencil version of the exam for people who prefer a classroom setting. Either way, the structure is the same:
| Exam Feature | Detail |
|---|---|
| Total questions | 150 |
| Time allowed | 2 hours |
| Question types | Multiple-choice, true/false, and case-based multiple-choice |
| Correct answers required | 113 (described by NAPS as 75%) |
| Delivery | Online via NAPS Certification Center; paper-and-pencil at an optional Immersion Class |
Two hours for 150 questions works out to under a minute per item, which tells you something about the domains. True/false and standard multiple-choice items reward crisp recall of definitions and rules. The case-based items reward applied judgment. For a deeper look at the cut score arithmetic, see the CTS passing score breakdown, and for a candid read on difficulty, the guide to how hard the CTS exam is.
A practical consequence: you can afford to miss 37 questions. That is a meaningful cushion, but not one you can spend on an entire domain. If you skip the ADA or joint-employer material because it feels dense, scenario questions in other domains will punish you anyway.
Domains 1 and 8: Discrimination and the ADA
These two domains share a legal foundation, so it helps to study them back to back even though they are numbered far apart.
Domain 1: Laws of discrimination
This is the broad anti-discrimination framework that governs how a staffing firm treats applicants and temporary employees, and how it responds to client requests.
- Know the protected characteristics and which statutes cover which.
- Understand why a staffing firm cannot simply honor a client's discriminatory preference; the firm carries its own exposure.
- Practice distinguishing a lawful, job-related requirement from a discriminatory one.
- Expect scenario items about client orders that screen candidates on a protected basis.
Domain 8: ADA
The Americans with Disabilities Act sits within the wider discrimination landscape but has its own vocabulary and procedures.
- Learn the concept of reasonable accommodation and who owes it in a three-party staffing relationship.
- Understand what a staffing firm may and may not ask about medical conditions at different stages of hiring.
- Be ready for cases in which an applicant discloses a condition and you must choose the compliant next step.
The staffing-specific wrinkle in both domains is the triangle: the staffing firm, the client company and the temporary worker. Generic HR knowledge treats employer and employee as a pair. The CTS exam repeatedly asks who is responsible when there are three parties. Keep that triangle in your head whenever a question mentions a client.
Domains 2 and 5: Applications, Interviews, Screening and Selection
These domains cover the front end of the staffing workflow, where most day-to-day compliance risk actually lives.
Domain 2: Application and interview practices
What you can ask, what you must not ask, and how you document it.
- Identify lawful versus unlawful interview questions, including questions that seem casual but probe protected information.
- Understand how application forms should be structured to avoid collecting inappropriate data.
- Recognize how consistent practices protect the firm if a decision is later challenged.
Domain 5: Screening and selection of temporary workers
How a firm evaluates candidates and matches them to assignments.
- Understand selection criteria that are job-related versus those that create disparate-impact risk.
- Know how screening steps interact with the laws in Domains 1, 8 and 9.
- Be able to evaluate a described screening process and spot the flaw.
Notice how Domain 5 pulls from several others. A screening process might include a background step, a medical question, a drug test and a client-specific requirement, and each element invites a different legal rule. When you review, work through full hiring sequences from first contact to assignment start rather than treating each rule in isolation.
Domains 3 and 4: Contracts and Employer Definitions
This pair is where staffing law diverges most sharply from ordinary employment, and it is where candidates with only general HR experience tend to feel least certain.
Domain 3: Contracts
The agreements that define the relationships among the staffing firm, its clients and its workers.
- Understand what a client service agreement should address and where risk gets allocated.
- Recognize clauses that shift or retain liability, and clauses that could undermine the firm's legal position.
- Be able to read a described contract term and judge whether it is advisable.
Domain 4: Employer/employment definitions
Who counts as the employer, and for what purposes.
- Learn how the law defines employer and employee, and why those definitions drive tax, insurance and compliance duties.
- Understand why a worker placed at a client site is still the staffing firm's employee for many purposes.
- Connect these definitions forward to Domain 10 on joint employment.
Domains 6, 7, 9 and 10: Temp-Specific Laws, Leave, Drug Testing, Joint Employer
The final four domains are the ones that most clearly distinguish this credential from a general HR certification.
Domain 6: Laws unique to temporary services work
Rules that exist specifically because of how temporary staffing operates.
- Study the legal provisions that apply to staffing firms in ways they do not apply to ordinary employers.
- Pay attention to how the manual frames these laws, since this is NAPS's own distinctive content.
Domain 7: Family leave
How leave entitlements work when the worker is temporary and the job site belongs to someone else.
- Understand eligibility concepts and how they apply to short assignments and multiple placements.
- Be ready for questions about which party handles leave obligations.
Domain 9: Drug testing
When, how and under what constraints a staffing firm or its client may test.
- Know the compliance considerations around testing policies and procedures.
- Understand how testing intersects with the ADA and discrimination rules covered earlier.
Domain 10: Joint employer
The doctrine under which both the staffing firm and the client can be treated as employers.
- Understand the factors that push a client toward joint-employer status.
- Recognize how a client's day-to-day control can create shared liability.
- Tie this back to contract language in Domain 3 and definitions in Domain 4.
Joint employment is the capstone concept. If you understand it well, you can reason through many scenario questions even when the specific fact pattern is new. It also explains why the earlier domains matter: the reason a staffing firm cares so much about interview practices, ADA compliance and contract drafting is that liability can attach to more than one party.
Registration, Fees and the Eligibility Wrinkle
Registration includes the legal manual, the examination and the certificate in one price. For NAPS members that is $300; for nonmembers it is $600. If you need a retest, the cost is $150 for members and $300 for nonmembers. NAPS updates the manual and the examination annually, though the public descriptions do not identify a specific current edition, so confirm what you receive at registration. A fuller cost breakdown is in the CTS certification cost guide.
Neither a length-of-service requirement nor NAPS membership is required. Candidates must accept NAPS ethical standards and the program rules.
Timing and scheduling questions are covered in the CTS exam dates guide, and if you are weighing whether to invest, the ROI analysis is a good companion.
Sequencing the Domains in Your Prep
Since the ten areas are unweighted and interlocking, sequence matters more than hours. A sensible order builds definitions first, then the hiring workflow, then the advanced doctrines that depend on both. Here is one way to lay out six weeks:
Foundations: Domains 4 and 3
- Master employer/employee definitions.
- Read the contract material with the three-party triangle in mind.
Discrimination core: Domains 1 and 8
- Learn the statutes together, then work ADA accommodation scenarios.
Hiring workflow: Domains 2 and 5
- Walk through complete application-to-placement sequences and flag each legal touchpoint.
Specialized rules: Domains 6, 7 and 9
- Concentrate on what is unique to temporary services, then leave and testing.
Capstone: Domain 10
- Revisit contracts and definitions through the joint-employer lens.
Timed practice
- Take full-length sets under a 2-hour limit and review every miss by domain.
The reasoning: definitions and contracts come first because everything else leans on them, and joint employer comes late because it synthesizes earlier material. Timed practice goes last so that your review of misses points you back to the right domain. You can drill with the CTS practice tests, and the one-page CTS cheat sheet is useful for the final-day skim.
After You Pass: Renewal Mechanics
Earning the credential is not the end of the obligation. To maintain it, you must complete 20 contact hours (2.0 CEUs) each year, and at least 17 of those hours must be NAPS-approved content. The annual renewal fee is $35 for individuals at member firms or $50 for nonmembers, and it is due on your examination anniversary. Because the exam content is updated annually, this ongoing learning is not busywork; the legal landscape the ten domains describe does shift.
Employers who value the credential tend to be staffing firms themselves, along with HR teams and hiring managers who work with contingent labor. To explore where it fits in a career, see the overview of CTS jobs and the salary guide. For a data-oriented discussion of outcomes, the CTS pass rate article explains why the one figure NAPS advertises, a 97% pass rate for Immersion participants across the CPC and CTS programs, should not be read as an overall CTS pass rate.
Frequently Asked Questions
No formal weighted examination blueprint was located. The ten areas are preparation topics compiled from NAPS's public FAQ and manual description, so treat them as equally important until you see otherwise in your manual.
The exam has 150 questions in 2 hours, mixing multiple-choice, true/false and case-based multiple-choice items. You need 113 correct answers, which NAPS describes as 75%.
Domains 1, 2, 5, 8 and 10 lend themselves to applied case questions, because they involve judgment calls among the staffing firm, the client and the worker. Still, review all ten, since scenarios often blend several areas.
Registration, including the legal manual, exam and certificate, is $300 for NAPS members and $600 for nonmembers. A retest is $150 for members and $300 for nonmembers.
NAPS's public pages conflict on this. The current CTS page extends access to HR professionals and hiring managers, while the program rules page describes a requirement to be currently employed full-time in the temporary-service business. Confirm with NAPS before registering.