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Human Rights

With a strong commitment to human rights across the value chain, GPSC has implemented a Human Rights Policy that adheres to the UN Guiding Principles on Business and Human Rights (UNGP). The objective is to minimize, prevent and avoid risks of human rights violation in the company and across the value chain by following the Human Rights Due Diligence Processes, which addresses adverse human rights impacts, a mitigation action plan, remediation for those impacted by human rights violations, as well as monitoring and reporting, based on strict observance of human rights protection.

Human Rights Policy

GPSC Group has written and published a Human Rights Policy that complies with the provisions of Thai and international laws as well as other related regulations that include the United Nations Global Compact (UNGC) and the International Labour Organization (ILO) Declaration on Fundamental Principles and Rights at Work. The company expects all executives and employees to uphold and strictly comply with the policy.

The Company will designate a unit with clear responsibility for overseeing human rights governance at the board committee level, by assigning the Corporate Governance and Sustainability Committee to ensure transparency and accountability, and to systematically integrate human rights risk management into the Board's strategic decision-making. Responsibilities will be assigned to relevant departments such as Human Resources, Corporate Governance and Compliance, Procurement, Corporates Social Responsibility, Security and Safety, Subsidiaries, Commercial and Sustainability to support human rights operations, monitor risks, and continuously report on performance. This structure enables the effective enforcement of human rights principles across all parts of the organization and supply chain.

Human rights management approach
GRI 103-2
Human Rights Policy
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GPSC's 5 Steps towards Human Rights Due Diligence
  1. The company announced its human rights policy through its information system.
  2. Human rights risk and impact assessments have been conducted at the national level on operational industrial plants and at the personal level.
  3. Integration of Assessment Results and Management: The assessment results are taken into account for future human rights risk management planning based on PTT Group's sustainability management framework, the security, safety, occupational health and environment management system, and Community Development & Community Relations Manual, in order to minimize and prevent impacts.
  4. Monitoring and reporting performance: The company has set monitoring periods and assessed performance based on plan types to make sure that the management process has been implemented effectively and the operational performance and management results have been disclosed openly among all stakeholders.
  5. Correction and remediation of impacts through a complaint mechanism. When the GPSC group can indicate that the GPSC group cause or contribute to negative human rights impacts GPSC Group should be corrected or participate in correction through a legitimate process. By establishing or participating in the establishment of a complaint mechanism for stakeholders who may be adversely affected by their activities.
Human Rights Policy Communication

GPSC group has used the PTT Group Human Rights Management System as the guideline for human rights management, implemented the UN guiding principle Human Rights Due Diligence, and informed to all executives and employees of the human rights policy via e-mail. There is also a human rights training plan for GPSC employees.

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The Company continuously assesses human rights risk assessment at the corporate level, covering the entire area of business operations in the Company, as well as evaluating business partners annually to effectively establish management practices in risky areas.

The Company has assessed human rights risks within the Company since 2018 to identify, prevent and reduce the impact of human rights risks in the Company's operations across the value chain. This risk assessment covers activities at the national level, industry groups, and operational areas where the Company operates, as well as identifying related human rights issues. Impact assessment in vulnerable groups such as women, pregnant women, people with disabilities, the elderly, children, indigenous, migrants workers, LGBTQI+ individuals, third-party employees and national assessments of potential impacts. The human rights risk assessment criteria are conducted based on two factors: severity and likelihood, covering all areas of human rights: Discrimination and harassment, Forced labor, Human trafficking, Child labor, Freedom of association, Right to collective bargaining, Living wage, Equal remuneration, Favorable working conditions (e.g. working hour) and occupational health and safety , Related issues (e.g., data privacy, land acquisition and forced resettlement, customer health and safety)

Based on the results of the human rights risk assessment, The Company has established measures to control and mitigate potential impacts and assess the remaining risks. (Residual Risks) After establishing human rights prevention and correction guidelines in the Company's business operations to ensure the management of human rights of the Company is effective in controlling impacts throughout the value chain.

The Company conducts human rights risk assessments at the corporate level covering groups of third parties who may be involved in or affected by the Company's activities to identify the potential human rights impact on stakeholders from within and outside the organization.

To support human rights complaints The Company has channels to receive and manage complaints from all stakeholders including internal channels for employees, such as welfare committees, employee feedback boxes, etc., and channels for external parties such as the Company's website, telephone, fax, and letter, etc.

Human Rights Risk and Impact Assessment Methodology
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The human rights impact depends on its scale, scope, and limits on the ability to restore those affected to a situation at least the same as their situation before the adverse impact.

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Human Rights Risk Assessment Result

GPSC prioritized its salient human rights issues, defined as the human rights issues at risk of the most severe negative impact through GPSC’s activities and business relationships. In 2025, GPSC identified its salient human rights risks based on a comprehensive assessment of business activities across its operations and throughout its value chain.

Human Right Risk Issues Percentage of areas assessed in the past 3 years (2025) Percentage of areas having a potential on high human rights risk Percentage of risks with management plan and process in place[SP10.1]
GPSC group 's Own Operations
  • Employee occupational health and safety
  • Supplier and contractor occupational health and safety
  • Community standard of living
 100%
(25 site out of 25)		 16%
(4 site out of 25)		 100%
(4 out of 4)
Tier-1 Supplier
  • Forced labor
  • Human trafficking
  • Freedom of association & Collective bargaining
  • Equal remuneration
  • Working conditions
  • Occupational health and safety
 100%
(1,017 out of 1,017 suppliers)		 4.13%
(42 out of 1,017 suppliers)		 100%
(42 out of 42 suppliers)
Joint ventures without Management control
  • No salient issues were identified
 100%
(15 out of 15 joint ventures)		 0%
(0 out of 15 joint ventures)		 100%
of JVs have been monitored and implement mitigation measures
GPSC’s joint ventures
(0 out of 0) have not been identified as having high human rights risk levels; therefore, no mitigation actions were required

The type of remediation actions taken

Key Salient Human Rights Risk Issues in 2025 Right Holders Business at Risks / Groups/Sub-groups at Risks Human Rights Risks Mitigation Measures
Own Operations

Occupational Health And Safety

Employee

Solar management and maintenance

Employees were exposed to the risk of road accidents, which may result in injuries requiring medical treatment and medical leave.

Regarding these potential human rights issues, they may violate the rights of employee which include:

  • Right to life
  • Right to health
  • Right to enjoy just and favorable conditions of work
  • Right to an adequate standard of living
  • GPSC Group Quality, Security, Safety, Health and Environment Policy
  • Human Rights Policy
  • Identification of OHS risk, hazard assessments and harm in workplace
  • Action plan to control, monitor and reduce harm in workplace with quantified targets
  • Actions to prepare for and respond to emergency situations
  • Procedures to investigate work-related injuries, ill health, diseases and incidents
  • Evaluation of progress of the existing action plan on reducing/preventing health issues/risks against targets
  • Internal inspections (ISO 9001, ISO 14001, ISO 45001, ISO 22301, and ISO 27001)
  • Incident management and safety enhancement
  • Occupational health and safety training

Additional Mitigation Measures

  • Promptly provided immediate care and support to the affected employee, ensuring that all medical treatment and assistance were delivered in full accordance with the employee’s entitlements.
  • Conducted a comprehensive review of travel safety protocols.
  • Reinforced awareness of proper safety practices and communicated clear guidelines to all employees, aiming to prevent the recurrence of similar incidents and enhance overall workplace safety.

Occupational Health And Safety

Supplier and contractor
  • Conventional Power Plant
  • Solar management and maintenance

Contractors were exposed to the risk of burn injuries caused by high pressure steam and falls from height, which may result in injuries requiring medical treatment and medical leave.

Regarding these potential human rights issues, they may violate the rights of supplier and contractor which include:

  • Right to life
  • Right to health
  • Right to enjoy just and favorable conditions of work
  • Right to an adequate standard of living
  • GPSC Group Quality, Security, Safety, Health and Environment Policy
  • Human Rights Policy
  • Identification of OHS risk, hazard assessments and harm in workplace
  • Action plan to control, monitor and reduce harm in workplace with quantified targets
  • Actions to prepare for and respond to emergency situations
  • Procedures to investigate work-related injuries, ill health, diseases and incidents
  • Evaluation of progress of the existing action plan on reducing/preventing health issues/risks against targets
  • Internal inspections (ISO 9001, ISO 14001, ISO 45001, ISO 22301, and ISO 27001)
  • Incident management and safety enhancement
  • Occupational health and safety training
  • Updates on procurement and contractual requirements, including matters related to Personal Protective Equipment (PPE) and Safety Rules and Regulations

Additional Mitigation Measures

  • Revise safety checklists, including specific items for the use of flammable, toxic chemicals and oxygen-depleting substances in confined spaces. If such chemicals are identified during work, The supervisor must halt work and review safety measures.
  • Improve and update the hazardous chemicals and dangerous goods notification form for contractors.
  • Post signs prohibiting the use of flammable chemicals in confined spaces.
  • Develop a work procedure for cleaning inside high-pressure and low-pressure steam separator tanks.
  • Establish a PTW Control Dashboard in the central control room to monitor the status and review various types of Permits to Work, especially in areas with overlapping activities.
  • Arrange immediate hospital transfer for the injured person and maintain close monitoring of their condition.
  • Install a safety net below the tiled roof as fall protection.

Remediation / Compensation

  • Medical expenses
  • Costs for accompanying family members during bedside care
  • Travel expenses for follow-up appointments
  • Compensation for loss of opportunity during recovery
  • Rehabilitation costs for burn wounds and psychological support.

Standard of Living

Community

Conventional Power Plant

The noise generated by the boiler system has adversely affected the community’s ability to rest at night.

Regarding these potential human rights issues, they may violate the rights of employee which include:

  • Right to an adequate standard of living
  • Right to health
  • GPSC Group Quality, Security, Safety, Health and Environment Policy
  • Human Rights Policy
  • Social and Environmental Responsibility Policy
  • Corporate Social Responsibility (CSR) Strategy
  • GPSC Community Development and Community Relations Manual
  • Identification of OHS risk, hazard assessments and harm in workplace
  • Action plan to control, monitor and reduce harm in workplace with quantified targets
  • Actions to prepare for and respond to emergency situations
  • Procedures to investigate work-related injuries, ill health, diseases and incidents
  • Evaluation of progress of the existing action plan on reducing/preventing health issues/risks against targets
  • Internal inspections (ISO 9001, ISO 14001, ISO 45001, ISO 22301, and ISO 27001)
  • Incident management and safety enhancement
  • Occupational health and safety training

Additional Mitigation Measures

  • Undertake improvements to systems, equipment, and piping that may be contributing to excessive noise levels.
  • Optimize production processes and mitigate noise generated during emergency events to reduce overall sound impact.
  • The department responsible for community relations and affected residents is currently evaluating the feasibility of assisting with home modifications to enhance noise insulation.
Tier-1 Suppliers and Contractors
  • Working Conditions
  • Health and Safety
  • Freedom of association & Collective bargaining
  • Equal Remuneration

Employee

Services: Operational Support (Logistics and Transportation)
  • Working Conditions : Exploitative workloads, long shifts, high delivery or operational quotas, irregular scheduling, and risk of fatigue, burnout, and stress among operational and logistics staff.
  • Health and Safety : Exposure to unsafe work environments, poorly maintained vehicles or equipment, inadequate safety measures, and heightened risk of accidents or occupational injuries during operational tasks.
  • Freedom of association & Collective bargaining : Barriers to organizing, limited grievance mechanisms, suppression of worker voice, and restricted opportunities for collective negotiation in operational and logistics roles.
  • Equal Remuneration : Unequal pay or inconsistent incentives for similar tasks, financial instability, and disparities between gig, contract, and permanent workers performing comparable operational functions.
  • Supplier Sustainable Code of Conduct: Mandates strict compliance with human rights and labor standards (e.g., freedom of labor, non-discrimination, and no child labor) as a core requirement for partnership.
  • Human Rights Policy: Requires all business partners and suppliers to adhere to international standards, including the UN Guiding Principles on Business and Human Rights (UNGP) and ILO standards.
  • Supplier Selection & Pre-Risk Assessment: Utilizes the Supplier Portal as a mandatory digital gatekeeper where suppliers must complete an ESG Risk Self-Assessment (covering CSR policy, environmental management systems, human rights, and Occupational Health and Safety); these results are evaluated through a weighted scoring system to determine eligibility for the Approved Vendor List (AVL).
  • Comprehensive ESG Risk Assessment: Conducts annual analysis of the likelihood and severity of social risks, specifically targeting labor management, human rights, social responsibility, and occupational health and safety.
  • Sustainable Supplier Development Program: Provides a mitigation path for suppliers with low sustainability scores, involving guidance and regular monitoring by external assessors until criteria are met.
  • Forced labor
  • Human Trafficking
  • Working Conditions
  • Freedom of association & Collective bargaining

Employee

Goods: Health & Safety Supplies
  • Forced labor: Unpaid or irregular wages, debt bondage, coercion to continue production, economic pressure on workers.
  • Human Trafficking: Confiscation of identity documents, high recruitment fees, restricted freedom of movement, exploitation risks.
  • Working Conditions: Overcrowded accommodation, poor sanitation, long hours, fatigue, unsafe production environments.
  • Freedom of association & Collective bargaining: Suppression of protests or grievances, threats or dismissals, limited channels for collective negotiation.
  • Supplier Sustainable Code of Conduct: Mandates strict compliance with human rights and labor standards (e.g., freedom of labor, non-discrimination, and no child labor) as a core requirement for partnership.
  • Human Rights Policy: Requires all business partners and suppliers to adhere to international standards, including the UN Guiding Principles on Business and Human Rights (UNGP) and ILO standards.
  • Supplier Selection & Pre-Risk Assessment: Utilizes the Supplier Portal as a mandatory digital gatekeeper where suppliers must complete an ESG Risk Self-Assessment (covering CSR policy, environmental management systems, human rights, and Occupational Health and Safety); these results are evaluated through a weighted scoring system to determine eligibility for the Approved Vendor List (AVL).
  • Comprehensive ESG Risk Assessment: Conducts annual analysis of the likelihood and severity of social risks, specifically targeting labor management, human rights, social responsibility, and occupational health and safety.
  • Sustainable Supplier Development Program: Provides a mitigation path for suppliers with low sustainability scores, involving guidance and regular monitoring by external assessors until criteria are met.
GPSC Group Human Rights Assessment Report 2025
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Updated as of February 2026

The above content is prepared in accordance with the sustainability reporting standards by the Global Reporting Initiative (GRI Standards), which is validated by external parties and provides a limited level of assurance of reporting information (Limited Assurance).

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