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14. Safety Management System in Construction Work

Even after the enactment of the Industrial Safety and Health Law in 1972, regulations to prevent industrial accidents in construction work have been strengthened in several steps, as serious accidents have continued to occur and have resulted in a large number of casualties

At the same time, it is a common practice in Japan's construction industry for a master employer, having contract with the order-placer to carry out an entire project, employs several subcontractors to undertake part of the contracted work, and these subcontractors in turn use other small subcontractors to share some of their work. This practice means multiple layers of contractors working together at a single workplace.

Partly due to this situation, a large number of industrial accidents continue to occur in the construction industry. In order to resolve this problem, the construction industry requires specific arrangements and systems for safety and health that are different from those for other industries.


1. Safety and health management systems in the construction industry

.The prevention of industrial accidents is the responsibility of each construction employer that employs workers. However, as a large number of workers employed by different employers are working together at the same workplace, specific systems or programs for accident prevention are required in the construction industry to ensure the safety of all workers, including subcontractor workers, in addition to the responsibility of each employer.

(1)Management system at a workplace where a master employer employs two or more subcontractors:

(a) Types of undertakings and the number of workers for which an overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha) must be appointed:




(i) Undertakings involving tunnel construction, bridge construction (limited to construction on roads or sites close to roads, or on rails or sites close to rails, within areas of concentrated population) and work using compressed-air methods, in which more than 30 workers are regularly employed, including subcontractor workers


(ii) Other undertakings in which more than 50 workers are regularly employed, including subcontractor worker.

(b) Employers who must appoint a safety and health supervisor(Anzen-Eisei-Sekininsha)


All subcontractors must appoint a safety and health supervisor when they participate in a construction undertaking for which an overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha) has been appointed.

(c) Employers who must appoint a master safety and health supervisor(Motokata-Anzen-Eisei-Kanrisha)


Master employers must appoint a master safety and health supervisor for work undertaken by said employer itself if an overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha) has been appointed for the undertaking.

(d) Employers who must appoint a safety supervisor, health supervisor and industrial physician



Master employers and each subcontractor must appoint a safety supervisor, health supervisor and industrial physician when such master employer and subcontractor employ more than 50 workers at the workplace.

(e) Employers who must appoint an operations-chief



All employers must appoint an operations chief to any undertaking for which the appointment of an operations-chief(Sagyo-Shuninsha) is legally required.

(2)Management system for an undertaking in which several construction firms are
undertaking work under a joint contract (joint-venture)







(Note) One contractor should be selected from among joint-venture contractors involved to serve as the master employer for the undertaking and to appoint an overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha) and a master safety and health supervisor(Motokata-Anzen-Eisei-Kanrisha). The types and scope of the undertaking for which such controllers and supervisors must be appointed and the method of appointment are the same as for Item (1).

(3)Management system covering work for which the appointment of an overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha) is not required

(a) Employers are required to appoint a small-scale workplace safety and health supervisor in the following cases:


(i) They are engaged in operations specified in (1)-(a)-(i), by regularly employing 20 workers or more, including subcontractor workers;


(ii) They are engaged in the construction of structures whose major elements consist steel frames or steel frames and reinforced concrete, by regularly employing more than 20 workers, including subcontractor workers;


(ii) Works other than (a) or (b) for which by 50 workers or more, including subcontractor workers, are regularly employed;

(b) Appointment of supervisors



For works described in Item 3)-a above, a small-scale workplace safety and health supervisor(Tensha-Anzen-Eisei-Sekininsha) must be appointed (except for cases in which an overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha) and a master safety and health supervisor(Motokata-Anzen-Eisei-Kanrisha) are appointed).
A small-scale workplace safety and health supervisor(Tensha-Anzen-Eisei-Sekininsha) should belong to the headquarters, branch offices or sales offices responsible for the management and guidance of workplaces.

(4)Management system for work involving high risks or hazards
(a) Employers are required to appoint a rescue supervisor(Kyugo-Kanrisha) in the following cases:

(i) They are engaged in operations at underground locations with a distance of 1,000 meters or more from the entrance of a tunnel under construction.

(ii) They are engaged in the construction of a shaft with a depth of 50 meters or more.

(iii) They are engaged in work under compressed air with a gauge pressure of 1kg/cm2 or more.

(5)Management system for headquarters, etc.

In the construction industry, headquarters, branch offices and sales offices not directly responsible for the management of construction work are required to have the same management system as for offices in general (for example, a safety supervisor must be appointed for offices employing more than 50 workers).


2. Major duties and qualifications of controllers and supervisors

(1)Overall safety and health controllers(Soukatsu-Anzen-Eisei-Sekininsha)

(a) Duties



Overall safety and health controllers(Soukatsu-Anzen-Eisei-Sekininsha) shall perform the following duties to prevent industrial accidents at workplaces where workers from different employers are working together:


(i) Establishing and administering a consultative organization


(ii) Ensuring better liaison and adjustment among related operations


(iii) Carrying out workplace patrol of the workplace


(iv) Providing guidance and assistance in the safety and health education to be conducted by related contractors


(v) Preparing the schedule relating to the progress of work and plans relating to the arrangement of machines, equipment and other facilities at the workplace and providing guidance to related contractors utilizing such machines and equipment so as not to violate any legal regulations

(b) Qualifications

Persons who carry out the overall control and management of the relevant undertaking to which they are appointed as an overall safety and health controller(for example, the work site manager)

(2)Master safety and health supervisors(Motokata-Anzen-Eisei-Kanrisha)

(a) Duties

Master safety and health supervisors(Motokata-Anzen-Eisei-Kanrisha) are responsible for technical matters relevant to the duties of Overall safety and health controllers(Soukatsu-Anzen-Eisei-Sekininsha).

(b) Qualifications

(i) Those who are graduates from regular science courses in universities or technical colleges, and who have three years or longer (five years or longer for those who have graduated courses other than regular scientific course) of practical experience in the field of safety and health in the execution of construction work

(ii) Those who are graduates of regular science courses in senior high schools and who have five years or longer (eight years or longer for those who are graduates of courses other than regular scientific course) of practical experience in the field of safety and health in the execution of construction work.

(iii) Those who have ten years or longer of practical experience in safety and health at construction workplaces.

(3)Safety and health supervisors(Anzen-Eisei-Sekininsha)

(a) Duties

(i) Carrying out liaison with the overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha)
(ii) Providing instructions to related parties concerning matters raised by the overall safety and health controller(Soukatsu-Anzen-Eisei-Sekininsha) and implementing steps to resolve such matters
(iii) Adjusting work plans for the supervisor's own workplace and those for the master employer's workplace
(iv) Confirming possible industrial accident dangers due to workers of various contractors working together at the same workplace
(v) Carrying out liaison and adjustment work with safety and health controller for subcontractors
(b) Qualifications
Those who can perform the duties specified in Item 3)-a.
(4)Small-scale workplace safety and health supervisors(Tensha-Anzen-Eisei-Sekininsha)
(a) Duties
(i) Carrying out workplace patrol (at least once every month)
(ii) Understanding the type and progress of each work at workplaces
(iii) Participating in the consultative organization at workplaces
(iv) Confirming the preparation of work plans at workplaces
(b) Qualifications
(i) Those who are graduates of universities or technical colleges and who have three years or longer of practical experience in the field of safety and health in the execution of construction work.
(ii) Those who are graduates of senior high schools and who have five years or longer of practical experience in the field of safety and health in the execution of construction work.
(iii) Those who have practical experience in the field of safety and health in the execution of construction work for eight years or longer
(5)Rescue supervisors(Kyugo-Kanrisha)
(a) Duties
Rescue supervisors shall perform the following duties to prepare for fires and explosions:
(i) Administering machines and equipment necessary for the rescue activities of workers
(ii) Conducting rescue training
(iii) Other necessary matters related to rescue activities
(b) Qualifications
Those who have the following experience and who have completed the training courses designated by the Minister for Labour
(i) For tunnel construction, etc., those who have three years or longer of experience in the execution of tunnel construction, etc.
(ii) For construction work under compressed air, those who have three years or longer of experience in the execution of construction work under compressed air.
(6)Operations chief(Sagyo-Shuninsha)
Described in 1 (Safety and Health Management System
("Special Regulations for Master Employers" will be discussed in the next session.)
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