Occupational Health

CNOOC Limited strictly complies with the Law of the People's Republic of China on the Prevention and Control of Occupational Diseases, the Regulations on Occupational Health Management in the Workplace, and relevant laws and regulations of countries and regions where it operates. The Company has revised management documents including the Health Management Measures, the Occupational Health Monitoring Management Implementation Rules, the Infectious Disease Emergency Management Implementation Rules, and the Health Management Implementation Rules for Offshore Operations Personnel. We actively implement the Healthy China strategy and enhance comprehensive health management, including the occupational health management system. The program protects employees’ physical and mental well-being and covers all regular employees as well as contractors and other third-party personnel.

Occupational Health Goals

In 2025, the Company established and achieved the goal of 100% occupational health examination rate and 100% coverage rate of regular monitoring of occupational disease hazards in the workplace.

Occupational Health Management System Certification

CNOOC Limited incorporates the occupational health management system as part of its QHSE risk management system. It conducts a comprehensive risk management system audit every two years, and all subsidiaries regularly conduct external and internal audits of the QHSE management system, covering all aspects related to occupational health management.

Occupational Health Training

In 2025, the Company established an occupational health training column on the Haixue platform. Online training was conducted for principal persons in charge of offshore oil operations and occupational health managers. Initial training was completed for 892 people, and annual refresher training for 4,149 people. All participants passed the assessment, achieving full coverage of occupational health training for these key personnel. Meanwhile, occupational health training was provided to over 7,931 employees exposed to occupational disease hazards, improving their occupational health awareness and protection capabilities.

Workplace Management

The Company engages third-party professional institutions with appropriate legal qualifications to conduct regular annual monitoring of occupational disease hazards in the workplace. This achieves 100% coverage of periodic monitoring of occupational disease hazards. The Company organizes annual occupational health examinations for employees exposed to occupational disease hazards. The Company maintains comprehensive occupational health examination records. Meanwhile, the Company conducts occupational disease hazard notification through contracts, bulletin boards, and warning signs. Personal protective equipment is provided to employees, and the Company supervises and guides employees in its proper use to ensure good personal occupational health protection.

Employee Mental Health

In line with the National Health Commission’s “Mental Health Year” initiative and management directives on promoting employee physical and mental well-being, CNOOC Limited reviewed its existing mental health practices, external professional support and identified gaps and weaknesses, and issued the Guidelines on Enhancing Mental Health Management. The Guidelines set out 19 specific actions across five key areas covering the improvement of mental health management mechanisms, development and integration of professional service resources, mental health awareness and cultural communication, psychological environment enhancement, and targeted support for special groups. Through these actions, we promoted five key shifts: from fragmented management to coordinated governance, from reliance on external resources to combined internal-external capability, from one-way communication to culture-embedded awareness, from passive response to proactive intervention, and from general services to targeted measures, comprehensively strengthening the Company’s mental health management.