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OHSAS 18001 Certification in Thailand

Introduction

OHSAS 18001 Certification in Thailand was a widely recognized Occupational Health and Safety Management System standard used by organizations to identify workplace hazards, control occupational health and safety risks, and improve workplace safety performance. Thailand adopted TIS 18001:2011, which was based on BS OHSAS 18001:2007. However, TIS 18001:2011 has now been withdrawn in Thailand.

OHSAS 18001 has also been replaced internationally by ISO 45001:2018. Organizations seeking a current occupational health and safety management system certification should therefore consider ISO 45001 rather than a new OHSAS 18001 certification.

What is OHSAS 18001?

OHSAS 18001 was an occupational health and safety management system standard designed to help organizations establish systematic processes for identifying hazards, assessing risks, implementing controls, and improving workplace safety.

The standard focused on preventing work-related injuries and ill health while helping organizations improve their occupational health and safety performance and meet applicable legal requirements.

In Thailand, TIS 18001:2011 was the national standard for occupational health and safety management systems. Thailand's certification infrastructure previously allowed organizations to obtain certification against TIS 18001 and BS OHSAS 18001.

Current Status of OHSAS 18001 in Thailand

OHSAS 18001 should be treated as a legacy standard rather than a current certification standard. Thailand's TISI records show that TIS 18001:2011 is currently cancelled, while Thailand's current occupational health and safety framework includes ISO 45001.

Thailand's accreditation framework currently lists Occupational Health and Safety Management Systems under TIS 18001 and ISO 45001, reflecting the transition from the older standard to the newer framework.

ISO 45001 was specifically developed to replace OHSAS 18001 and places greater emphasis on leadership, organizational context, worker participation, risk-based thinking, and continual improvement.

Benefits Historically Associated with OHSAS 18001

Organizations that implemented OHSAS 18001 could benefit from:

  • Better identification of workplace hazards

  • Improved occupational health and safety controls

  • Reduction of workplace risks

  • Improved employee safety awareness

  • Better compliance management

  • Improved emergency preparedness

  • More systematic safety procedures

  • Improved organizational reputation

  • Greater confidence among customers and business partners

  • Continual improvement of safety performance

These principles remain relevant today and are incorporated into the more current ISO 45001 framework.

Key Areas Covered by OHSAS 18001

OHSAS 18001 addressed several important areas of occupational health and safety management, including:

Occupational Health and Safety Policy

Organizations established a policy demonstrating their commitment to workplace health and safety.

Hazard Identification and Risk Assessment

Organizations identified workplace hazards and evaluated associated occupational health and safety risks.

Legal and Other Requirements

Applicable laws, regulations, and other occupational health and safety requirements were identified and considered within the management system.

Objectives and Programs

Organizations established safety objectives and programs to improve occupational health and safety performance.

Operational Controls

Controls and procedures were established for activities associated with significant workplace risks.

Emergency Preparedness

Organizations developed arrangements for identifying and responding to potential emergency situations.

Monitoring and Measurement

Safety performance was monitored through inspections, measurements, incident investigations, and other evaluation activities.

Corrective and Preventive Action

Organizations addressed incidents, nonconformities, and underlying causes through corrective and preventive actions.

Management Review

Top management periodically reviewed the occupational health and safety management system and its performance.

OHSAS 18001 Certification Process in Thailand

When OHSAS 18001/TIS 18001 certification was available, organizations generally followed a process such as:

1. Gap Assessment

Existing occupational health and safety practices were compared with the requirements of the applicable standard.

2. Policy Development

The organization established an occupational health and safety policy and defined safety objectives.

3. Hazard Identification and Risk Assessment

Workplace hazards were identified, risks were evaluated, and appropriate controls were established.

4. Management System Implementation

Procedures, operational controls, emergency arrangements, training programs, and monitoring processes were implemented.

5. Employee Training

Employees were trained regarding workplace hazards, safety procedures, emergency response, and their responsibilities.

6. Internal Audit

Internal audits were conducted to assess whether the management system was effectively implemented.

7. Management Review

Management reviewed safety performance, incidents, audit findings, corrective actions, and improvement opportunities.

8. External Assessment

A certification body assessed the organization's occupational health and safety management system against the applicable requirements.

Who Used OHSAS 18001 in Thailand?

OHSAS 18001 was applicable to organizations across many industries, including:

  • Manufacturing companies

  • Construction companies

  • Engineering organizations

  • Chemical industries

  • Automotive companies

  • Food and beverage businesses

  • Logistics and transportation companies

  • Warehouses

  • Mining organizations

  • Oil and gas companies

  • Healthcare organizations

  • Hospitality businesses

  • Service organizations

  • Government organizations

The standard was particularly useful for organizations with significant workplace health and safety risks.

OHSAS 18001 vs ISO 45001

The major difference is that ISO 45001 replaced OHSAS 18001. ISO 45001 follows the ISO management-system structure and places stronger emphasis on organizational context, leadership responsibility, worker consultation and participation, and the proactive management of risks and opportunities.

Thailand's current national standard TIS 45001-2561 is identical to ISO 45001:2018.

Organizations that previously used OHSAS 18001 can use their existing occupational health and safety processes as a foundation when transitioning to ISO 45001, although the management system needs to be assessed and updated against the current requirements.

Why Transition to ISO 45001?

For organizations in Thailand that previously maintained OHSAS 18001 certification, transitioning to ISO 45001 can provide a current and internationally recognized framework for occupational health and safety management.

ISO 45001 can help organizations:

  • Identify and control workplace hazards

  • Improve worker participation

  • Strengthen leadership involvement

  • Manage OH&S risks and opportunities

  • Improve emergency preparedness

  • Monitor safety performance

  • Address incidents and nonconformities

  • Continually improve OH&S performance

Conclusion

OHSAS 18001 Certification in Thailand was historically used to demonstrate an organization's commitment to occupational health and safety management. Thailand's former TIS 18001:2011 was based on BS OHSAS 18001:2007, but TIS 18001:2011 is now cancelled.

For organizations seeking certification today, ISO 45001:2018 / TIS 45001-2561 is the appropriate current standard. ISO 45001 provides an updated framework for managing workplace hazards, protecting workers, improving safety performance, and continually strengthening occupational health and safety management.

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