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:

1. Minimum 2 years of preventive safety and health work experience (not incident response)
2. At least 50% of that experience must be in the construction industry
3. 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 Exam Format

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.

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.

Sample CHST - Construction Health and Safety Technician Practice Questions

Try these questions from our free CHST - Construction Health and Safety Technician practice tests. The correct answer and an explanation follow each question.

1. A CHST is establishing annual safety objectives for a multi-trade construction program. Which approach is MOST consistent with recognized occupational health and safety management system (OHSMS) principles such as ANSI/ASSP Z10 or ISO 45001?

   • A. Set objectives using the prior year's Total Recordable Incident Rate (TRIR) as the sole basis
   • B. Establish objectives that are measurable, time-bound, and directly address hazards identified through the planning process
   • C. Carry forward identical objectives from the previous year to maintain program consistency
   • D. Limit objectives to high-hazard operations only to focus available resources

   Answer: B. Establish objectives that are measurable, time-bound, and directly address hazards identified through the planning process

   ANSI/ASSP Z10 and ISO 45001 both require that safety objectives be specific, measurable, achievable, relevant, and time-bound (SMART), and that they flow directly from hazard identification and risk assessment findings. Using only lagging indicators like TRIR or recycling prior objectives fails to drive proactive, risk-based improvement.

2. A safety program manager wants to improve supervisor accountability for safety. Which mechanism is MOST effective for embedding safety into supervisor performance expectations?

   • A. Requiring supervisors to attend monthly safety committee meetings
   • B. Including measurable safety performance metrics in supervisor performance reviews and compensation
   • C. Posting supervisor names on a safety scoreboard visible to all workers
   • D. Issuing supervisors a copy of the updated site safety plan each quarter

   Answer: B. Including measurable safety performance metrics in supervisor performance reviews and compensation

   Tying safety metrics to performance reviews and compensation creates formal accountability and aligns supervisor incentives with safety outcomes.

3. When evaluating a construction site's safety program, a CHST finds the experience modification rate (EMR) is 1.35. What does this indicate?

   • A. The company has 35% fewer injuries than average
   • B. The company's workers' comp costs are 35% above industry average
   • C. The company is exempt from OSHA inspections
   • D. The company qualifies for safety incentive bonuses

   Answer: B. The company's workers' comp costs are 35% above industry average

   An EMR above 1.0 indicates a worse-than-average injury history; 1.35 means costs are approximately 35% higher than the industry average.

4. Which OSHA construction standard governs electrical safety requirements specifically for the construction industry, as distinct from general industry?

   • A. 29 CFR 1910.301–399
   • B. 29 CFR 1926.400–449
   • C. 29 CFR 1910.147
   • D. 29 CFR 1926.502

   Answer: B. 29 CFR 1926.400–449

   Subpart K (29 CFR 1926.400–449) of OSHA's construction standards covers electrical safety requirements specific to construction activities.

Take the full CHST - Construction Health and Safety Technician practice test