GB 15499-2025 Determination of lost workdays for work safety accidents injury English, Anglais, Englisch, Inglés, えいご
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ICS
CCS H
National Standard of the People's Republic of China
GB 15499-2025
Determination of lost workdays for work safety accidents injury
生产安全事故伤害损失工作日判定
Issue date: 2025-12-02 Implementation date: 2027-01-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Basic Requirements
5 Lost Workdays for Trunk and Limb Injuries
6 Lost Workdays for Eye Injuries
7 Lost Workdays for Nasal Injuries
8 Lost Workdays for Ear Injuries
9 Lost Workdays for Oral and Maxillofacial Injuries
10 Lost Workdays for Scalp and Craniocerebral Injuries
11 Lost Workdays for Neck Injuries
12 Lost Workdays for Chest Injuries
13 Lost Workdays for Abdominal Injuries
14 Lost Workdays for Urinary and Reproductive Organ Injuries
15 Lost Workdays for Occupational Acute Poisoning
16 Lost Workdays for Burns
17 Lost Workdays for Other Injuries
18 Application of Results
Appendix A (Informative) Conversion List of Injury Locations and Lost Workdays
Bibliography
Determination of Lost Workdays for Injuries in Production Safety Accidents
1 Scope
This document specifies the basic requirements for determining lost workdays in production safety accident investigations, as well as the corresponding lost workdays for trunk and limb injuries, eye injuries, nasal injuries, ear injuries, oral and maxillofacial injuries, scalp and craniocerebral injuries, neck injuries, chest injuries, abdominal injuries, urinary and reproductive organ injuries, occupational acute poisoning, burns, and other injuries. It also provides requirements for the application of results.
This document is applicable to the calculation of lost workdays for injured personnel in production safety accident investigations and the rapid determination of minor or severe injuries.
This document is not applicable to the calculation and statistics of actual absence from work time, hospitalization time, work-related injury leave periods, work-related injury insurance compensation amounts, and other related data.
Note: In this document, "production safety accidents" are referred to as "accidents."
2 Normative References
This document does not contain normative references.
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Coexistent Injury
Injuries to unrelated parts of the human body with independent functions.
3.2
Accumulated Injury
Multiple injuries to functionally related parts of the human body.
3.3
Diagnosis Result of Injury Condition
Medical documents issued by hospitals, including outpatient records, emergency records, inpatient records, discharge summaries, pathological reports, blood test reports, imaging examination reports, etc.
3.4
Injury
Abnormalities or losses in the physiological, functional, or anatomical histology of an injured person.
3.5
Injured Part
The body part injured as indicated in the diagnosis result of the injury condition.
3.6
Lost Workdays
A quantified time representing the severity of human injury.
Note: This also applies to non-working individuals, such as the elderly and children, whose lost workdays shall be determined according to this document.
3.7
Injured Person
An individual who sustains bodily injuries due to a production safety accident.
Note: This also applies to non-employees.
4 Basic Requirements
4.1 Lost workdays shall be determined according to Chapters 5 to 17 based on a clear diagnosis result of the injury condition issued by a second-level or higher medical institution within 7 days of consultation.
4.2 In the following two situations, lost workdays shall be determined based on the diagnosis result of the injury condition issued by a second-level or higher medical institution or by forming a medical expert group, referencing similar provisions of this document:
— When a second-level or higher medical institution is unable to issue a clear diagnosis result of the injury condition within 7 days of consultation;
— When injuries are not specified in this document.
4.3 Only the lost workdays corresponding to human injuries caused by the accident shall be assessed, including primary pathological changes resulting from the accident and complications directly related to the injuries.
4.4 The determination of lost workdays shall be carried out according to sections 4.1, 4.2, and 4.3 and shall not await the "post-recovery symptom" results after medical treatment concludes.
4.5 For multiple injuries, accumulated injuries shall be calculated first, followed by coexistent injuries, to determine the final lost workdays for the injured person. Specifically:
— Accumulated injuries: The lost workdays for each type of injury shall be added sequentially. The calculated lost workdays shall not exceed the lost workdays for complete severance or removal of the corresponding part (organ).
— Coexistent injuries: After sorting the lost workdays in descending order, the top three shall be taken—the most severe injury at 100%, the next at 70%, and the third at 10%, then added together. If the lost workdays for injuries are the same, they shall be randomly sorted before calculating the lost workdays for coexistent injuries.
4.6 The lost workdays for deceased individuals shall be 6,000 days. The final lost workdays for injured persons shall not exceed 6,000 days.
5 Lost Workdays for Trunk and Limb Injuries
5.1 Basic Requirements
5.1.1 Injuries to different parts of a single upper limb (including the scapula, clavicle, humerus, ulna and radius, and hand)—such as fractures, joint and soft tissue injuries, limb and nerve function injuries, and burns to specific areas—shall be calculated as accumulated injuries for lost workdays.
5.1.2 Injuries to different parts of a single lower limb (including the pelvis, acetabulum, femur, patella, tibia and fibula, and foot)—such as fractures, joint and soft tissue injuries, limb and nerve function injuries, and burns to specific areas—shall be calculated as accumulated injuries for lost workdays.
5.1.3 Injuries to both upper limbs or both lower limbs (including fractures, joint and soft tissue injuries, limb and nerve function injuries, and burns to specific areas) shall be calculated as accumulated injuries for lost workdays.
5.1.4 For open fractures, the lost workdays for the injured part shall be multiplied by 1.5, and the lost workdays for open soft tissue injuries in the corresponding part shall not be calculated separately. For simple fractures without displacement, the lost workdays for the injured part shall be multiplied by 0.5.
5.1.5 For amputation-type injuries, only the lost workdays for the corresponding amputation site shall be calculated. Lost workdays for distal amputation sites shall not be calculated separately.
Example: Amputation of the proximal phalanx of the index finger of the dominant hand results in 440 lost workdays.
5.2 Lost Workdays for Simple Fracture Injuries
