𝐶𝑒𝑟𝑡𝑖𝑓𝑖𝑒𝑑 𝑂𝑐𝑐𝑢𝑝𝑎𝑡𝑖𝑜𝑛𝑎𝑙 𝑆𝑎𝑓𝑒𝑡𝑦 𝐴𝑢𝑑𝑖𝑡𝑜𝑟 (𝐶𝑂𝑆𝐴®)

 is a safety practitioner who specializes in a specific area in the safety auditing at workplace. The auditing expertise must be in a definite area such as fire safety, transportation safety, hazardous materials, product safety, health care safety, electrical safety, oil well drilling and well servicing, ladder safety etc.

His or her auditing skills and knowledge can help enterprises to determine compliance with local authority and international expectations in relation to risks, potential hazards and controls measures and preparation of emergency response plans.

Application Criteria for COSA®

Candidates must fulfill all criteria set by the Board for this certification

BWCSP sets certification criteria for Certified Occupational Safety Auditor (COSA®) through the ISO/IEC 17024 standards for personnel certification.

Education Requirements

have  minimum of a bachelor’s degree in any field or a professional qualification in occupational health and safety recognized by international safety organizations or other approved disciplines by the Board.

Work Experience Requirements

have ten (10) years of safety experience where safety auditing is at least 50% preventative*, professional level with his/her safety duties.

* Preventative:
Your duties are actively involved with provision of day to day risk assessments and control measures to protect people, and prevent incidents/ accidents at work


Must pass the COSA® examination

Certification Maintenance Requirements

  • pay annual renewal fee and
  • meet recertification requirements

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Benefits of Certification

There is no doubt that any (COSA®) holder will show his or her safety auditing expertise and also show their commitment to high qualification standard for the subject they work on.

COSA® has its privileges

As a safety manager, you have many choices when it comes to your career path. You can make the choice to pursue a safety professional.

Obtaining a COSA® certification will set you apart from others in your field and will have a measurable impact on your career.

Value of COSA® certification

For personal profession 

  • enhance professional credibility
  • provide evidence of professional commitment
  • provide a benchmark and validates knowledge, skills and practice
  • increase earning potentially

For employers 

  • is an indicator of professionalism
  • enhance public image
  • offer a higher public assurance of competence

Professional designation

Anyone who holds COSA® Certification is entitled to use this “COSA” after their name to show their peers that they have accomplished the criteria and the expectations by BWCSP.

COSA® Examination

There are two options for the COSA examination: Proctored Online Exam and Open Book Exam.

Proctored Online Exam

  • Computer based exam at our authorized centers Worldwide
  • Duration: 6 hours
  • Multiple choice questions: 200

Open Book Exam

  • You can do the exam at home or workplace in our system
  • Duration: 24 hours
  • Written questions: 30

Reference Books

You can access our books library for your learning purpose and exam.
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