What Is the CHST Certification?
The Construction Health and Safety Technician (CHST) is a nationally recognized credential issued by the Board of Certified Safety Professionals (BCSP). It is designed for safety and health professionals who work at the technician level in the construction industry, demonstrating competency in recognizing, evaluating, and controlling construction-site hazards.
Unlike many certifications that require a four-year degree, the CHST is built around hands-on experience, making it accessible to safety coordinators, foremen, and field supervisors who have developed their expertise on the job. Earning the CHST signals to employers that you have a verified, measurable knowledge base in construction safety — backed by one of the most respected credentialing bodies in the profession.
If you want to put your preparation to the test right now, explore our CHST certification exam practice questions before diving deeper into the guide.
Who Needs the CHST?
The CHST is the entry-level professional safety credential for construction. It is most valuable for:
- Safety technicians and safety coordinators working on job sites
- Foremen and supervisors who oversee crews and manage daily hazard controls
- Safety officers at general contractors, subcontractors, and specialty trade firms
- Workers transitioning from a field trade into a dedicated safety role
Many construction companies now require or strongly prefer the CHST when hiring safety personnel — particularly on federally funded or large commercial projects where demonstrable credentials are part of contract compliance. If you are aiming for a long-term career in construction safety, the CHST is the standard first step before pursuing the Certified Safety Professional (CSP).
CHST Eligibility Requirements
The CHST is experience-based — there is no degree requirement. To qualify, candidates must meet all of the following:
- Minimum 2 years of preventive safety and health work experience (not incident response)
- At least 50% of that experience must be in the construction industry
- Agreement to abide by the BCSP Code of Ethics
Experience is documented and verified when you submit your application through the BCSP portal. Part-time experience is prorated — two years at 20 hours per week counts as one year. Supervisory safety work, safety inspections, training delivery, and hazard analysis all qualify, provided the primary focus is prevention.
Once BCSP approves your application, you have one year to schedule and pass the exam. For actionable CHST certification tips on how to document your experience effectively, review our dedicated tips guide.
CHST Key Concepts
📝 What is the passing score for the CHST exam?
Most CHST exams require 70-75% to pass. Check the official exam guide for exact requirements.
⏱️ How long is the CHST exam?
The CHST exam typically allows 2-3 hours. Time management is critical for success.
📚 How should I prepare for the CHST exam?
Start with a diagnostic test, create a 4-8 week study plan, and take at least 3 full practice exams.
🎯 What topics does the CHST exam cover?
The CHST exam covers multiple domains. Review the official content outline for the complete list.
The CHST exam is administered by PSI Exams at testing centers nationwide. Key details:
- Total questions: 225 (200 scored + 25 unscored pretest questions)
- Time limit: 4 hours
- Format: Computer-based, multiple-choice
- Scheduling: Through PSI after BCSP approves your application
The 25 pretest questions are randomly distributed throughout the exam and are indistinguishable from scored items — you must treat every question as if it counts. Results are reported immediately upon completion, with a pass/fail outcome and a scaled score. Candidates who do not pass may retake the exam after a 90-day waiting period.
Working through timed CHST practice questions under realistic conditions is one of the most effective ways to build the pacing and confidence needed on exam day.
CHST Content Domains
The BCSP publishes an official examination blueprint that breaks the CHST into weighted content domains. Understanding this distribution helps you allocate study time proportionally:
Additional domains and approximate weights:
- Hazard Communication and Materials Handling — 8%: GHS/SDS requirements, chemical storage, material handling equipment
- Tools, Machinery, and Equipment — 8%: hand tools, power tools, guarding, inspections
- Fire Prevention and Protection — 7%: fire suppression, hot work permits, flammable liquids storage
- Excavation, Trenching, and Soil Mechanics — 6%: soil classification, protective systems, competent person requirements
- Scaffolds — 6%: supported and suspended scaffold types, capacity, access, fall protection
- Cranes and Rigging — 6%: crane inspection, rigging hardware, signal persons, critical lift plans
- Other construction safety topics — 10%: concrete and masonry, demolition, marine operations, and more
The BCSP Candidate Handbook (available free on bcsp.org) lists the exact reference standards — primarily OSHA 29 CFR 1926 — that you should study for each domain. Pair the handbook with targeted CHST exam prep questions keyed to each domain to close knowledge gaps efficiently.
Download and read the BCSP CHST Candidate Handbook — it defines every domain and lists official reference standards. Obtain a current copy of OSHA 29 CFR 1926 (Construction Standards) and study the subparts mapped to high-weight domains (Subparts M, K, Q, R, P). Take a full-length timed practice exam to establish a baseline score and identify weak domains before focused study. Build a domain-by-domain study schedule, spending roughly proportional time on each (e.g., 18% of study hours on Safety Program Management). Review real incident case studies to reinforce the application of hazard control hierarchies in construction contexts. Take at least 3 more full practice exams in the final two weeks, simulating PSI test center conditions with no interruptions. For additional preparation strategies and common mistakes to avoid, read our 7 essential CHST certification tips — compiled from the experiences of candidates who have passed the exam.
You can also sharpen domain-specific knowledge with our CHST practice questions with video answers, which walk through the reasoning behind each correct response in detail.
Career Path and Salary Impact
Earning the CHST has a measurable effect on both marketability and compensation in the construction safety field:
- Entry-level CHST-certified safety technicians typically earn $55,000–$70,000/year
- Experienced safety coordinators and safety managers with CHST earn $70,000–$85,000/year
- Senior safety managers and directors in large firms can reach $90,000+ annually
Beyond pay, the CHST is often a contractual or insurance requirement on large general contractor projects, which means the credential directly expands the types of positions and projects you are eligible for.
The CHST → CSP Pathway
The CHST is explicitly designed as a stepping stone to the Certified Safety Professional (CSP), BCSP's flagship credential. The CSP requires a four-year degree and more extensive experience — but CHST holders who accumulate that experience are well-positioned to transition. Many professionals earn the CHST to enter the field, then pursue the CSP as their career and education advance.
Before sitting for the full exam, use our CHST certification exam simulator to confirm you are ready — it mirrors the real exam's question style, domain distribution, and time pressure.
For a quick review of the highest-yield test topics, our CHST exam prep tips cover the seven areas where candidates most often lose points.
Pros
- Industry-recognized credential boosts your resume
- Higher earning potential (10-20% salary increase on average)
- Demonstrates commitment to professional development
- Opens doors to advanced career opportunities
Cons
- Exam preparation requires significant time investment (4-8 weeks)
- Certification fees can be $100-$400+
- May require continuing education to maintain
- Some employers may not require certification
Do I need a college degree to earn the CHST?
No. The CHST has no degree requirement. Eligibility is based entirely on work experience: a minimum of 2 years of preventive safety and health experience with at least 50% in the construction industry. This makes it one of the most accessible professional safety credentials for field workers and tradespeople moving into safety roles.
How many questions are on the CHST exam and how long is it?
The CHST exam contains 225 total questions — 200 scored and 25 unscored pretest items — administered over 4 hours at a PSI test center. The pretest questions are randomly placed and look identical to scored questions, so treat every item seriously. Results are provided immediately after you finish.
What is the CHST passing score?
The passing scaled score is 700 on a 1,000-point scale, which is roughly equivalent to 70% correct on the 200 scored questions. The scaled scoring system adjusts for minor differences in difficulty across exam versions, so the exact raw number of correct answers needed may vary slightly from one administration to another.
How often do I need to renew the CHST, and what does renewal require?
The CHST must be renewed every 5 years. Renewal requires earning 30 continuing education credits (CEUs) in safety and health topics during the five-year cycle. CEUs can be earned through conferences, webinars, college courses, safety committee leadership, and other BCSP-approved activities. Failure to renew by the expiration date results in credential lapse.