CHST Pass Rate, Format & Study Guide

The Construction Health and Safety Technician (CHST) is administered by the Board of Certified Safety Professionals (BCSP), which began in 1963 as a professional-development project formed by an executive committee of what was then the American Society of Safety Engineers (ASSE, now ASSP) — with BCSP's flagship Certified Safety Professional (CSP) credential first offered in 1970, making BCSP one of the longer-established safety-credentialing bodies in the US. CHST specifically recognizes dedication to and competency in construction-specific safety, health, and environmental (SH&E) work — validating the specialized knowledge needed to prevent illness and injury on construction job sites, a genuinely distinct discipline from general industrial or workplace safety given construction's unique hazard profile (fall risk, heavy equipment, changing site conditions).

Construction remains one of the higher-risk industries for workplace injury and fatality in the US, and construction firms — particularly larger general contractors and those working on complex or high-hazard projects — increasingly require dedicated safety personnel holding recognized credentials like CHST as part of both regulatory compliance and genuine risk-management practice. For safety professionals specializing in construction specifically (as distinct from general industrial or occupational safety more broadly), CHST is one of BCSP's most directly relevant credentials, and it's frequently a stated qualification requirement for construction safety technician and coordinator roles.

CHST is for safety professionals working specifically in construction — construction safety technicians, site safety coordinators, and SH&E specialists whose work centers on job-site hazard identification, safety program implementation, and incident response within the construction industry specifically, rather than general industrial or workplace safety across other sectors.

The certifying body does not publicly publish an official pass rate for this exam. Be wary of third-party sites citing a specific number here — treat any pass-rate claim you see elsewhere for this exam as unverified.

BCSP requires at least a 6-week wait from your last attempt before retesting, and a new exam authorization (another $300) must be purchased. You have one year from application approval to sit for any purchased exam authorization.

BCSP does not publish a fixed passing score or percentage on its CHST or Credentials At-A-Glance pages. Official results are available immediately once the exam is submitted.

The exam is 200 multiple-choice questions delivered by computer at a Pearson VUE test center, with a 4-hour time limit. Official results are available immediately after the exam is submitted, giving candidates same-day certainty about their outcome rather than a waiting period for results processing.

• Hazard and Risk Identification and Control36.6%
• Emergency Preparedness, Incident Investigation, and Response19.9%
• Safety Program Development, Implementation, and Sustainment22.5%
• Leadership, Communication, and Training21%

Per BCSP's own published exam breakdown, CHST content spans four domains. Hazard and Risk Identification and Control (36.6% of the exam, by far the largest domain) covers the core work of identifying construction-site hazards and implementing controls to mitigate them. Safety Program Development, Implementation, and Sustainment (22.5%) covers building and maintaining an effective ongoing site safety program rather than one-off hazard fixes. Leadership, Communication, and Training (21%) covers the people-management side of construction safety — training workers, communicating safety requirements, and leading a safety-conscious site culture. Emergency Preparedness, Incident Investigation, and Response (19.9%, the smallest domain but still nearly a fifth of the exam) covers responding to and investigating incidents when they do occur. Given Hazard and Risk Identification's outsized weighting, candidates should concentrate the bulk of their preparation there while still covering all four domains, given none of them fall below roughly 20% of the exam.

Candidates need three years of experience in construction safety, with at least 35% of their job duties requiring technical skill and knowledge specifically in safety, health, and environment (SH&E) work — meaning general construction experience alone, without a genuine safety-focused component to the role, doesn't satisfy this requirement. Once an application is approved, candidates have one year to sit for any purchased exam authorization, so timing an application relative to when a candidate actually intends to test matters for making full use of that one-year window.

BCSP charges a $140 application fee plus a $300 examination fee — both non-refundable per BCSP's own published fee schedule — though a $550 exam / $676 combined bundle rate is also offered as an alternative to paying the two fees separately. If a candidate doesn't pass, BCSP requires at least a 6-week wait from the last attempt before retesting, and a new exam authorization (another full $300) must be purchased for the retake — the application fee isn't required again for a retake within the same original application approval, but the exam fee itself is.

BCSP recertification cycles normally run five years, starting July 1 and ending June 30 of the fifth year, requiring certificants to achieve a designated number of recertification points through various qualifying activity categories, submitted via an online worksheet. CHST specifically requires 20 recertification points (equivalent to 200 hours of qualifying activity) per five-year cycle — a real, meaningfully lower bar than BCSP's higher-level credentials (CSP, SMP, ASP), which require 25 points (250 hours) over the same period. At least 0.5 points (5 hours) of CHST's 20-point total must specifically be in Ethics content, a requirement applied uniformly across all BCSP credential holders regardless of which specific credential they hold. Courses and conferences complying with IACET continuing-education standards convert at one CEU equaling one recertification point.

For a 200-question, 4-hour exam grounded in real on-the-job construction safety experience (3 years minimum, 35%+ SH&E duties), 8-10 weeks of structured study is a reasonable default for a candidate already meeting the eligibility bar, weighted toward Hazard and Risk Identification and Control (36.6% of the exam, the heaviest domain) before a final week of timed practice.

No structural changes to the CHST exam's 200-question/4-hour format or BCSP's five-year/20-point recertification cycle have been publicly announced as of August 2026. BCSP has periodically adjusted specific recertification-point rules for certain activity categories in recent years (reflected in BCSP's own "BCSP New Rules" guidance published for 2025), so certificants approaching a recertification deadline should confirm current point-earning rules directly against bcsp.org rather than an older cached summary, even though the core 20-point/five-year structure itself has remained stable.