Ordinance on Industrial Safety and Health
Ministry of Labour Ordinance No. 32 of September 30, 1972
Latest Amendments:
Ministry of Health, Labour and Welfare Ordinance No. 47 of March 30, 2007
In Japanese
掲載日：2008.03.28
Part II Safety Standards
Chapter VIII Prevention of Dangers in Tree Felling Work, etc.
Section 1 Tree Felling, Logging, etc.
Article 477 (Prevention of Dangers in Tree Felling Work)
- (1) The employer shall, when carrying out the work of tree felling, have the worker intended to engage in the felling of standing trees carry out the following matters for each tree. However, the provisions set forth in item (i) and (iii) shall not apply to cases where hydraulic felling machines are used:
- (i) To determine in advance the place of evacuation for when felling;
- (ii) To remove shrubs, branches, vines, loose stones and other objects, which is liable to cause dangers during work.
- (iii) When chest-high diameter of trees to be felled is 40 cm or more, to make a receiving groove of a depth of one-fourth or more of the root diameter of the said trees.
- (2) The worker intends to felling of standing tree shall carry out the matters listed in each item of the preceding paragraph.
Article 478 (Head Guard of Hydraulic Felling Machine)
- (1) The employer shall, as regards a hydraulic felling machine, not use the one without a sound head guard.
Article 479 (Signals of Felling)
- (1) The employer shall, when carrying out the work of tree felling, set fixed signals for fellingand make them known to the workers concerned with the said work.
- (2) The employer shall, when carrying out the work of tree felling when it is liable to cause dangers to workers other than those engaged in the said work felling of standing trees (hereinafter referred to as “other workers” in this Article) due to felling, have in advance workers engaged in the felling work of standing trees give the signals set forth in the preceding paragraph, and shall not have the workers commence felling unless otherwise having conformed that other workers have evacuated.
- (3) The worker engaging in the felling work set forth in the preceding paragraph shall, when it is liable to cause dangers set forth in the same paragraph, give signals in advance and not have the workers commence felling procedure unless otherwise having confirmed that other workers have been evacuated.
Article 480 (Prevention of Dangers in Logging Work)
- (1) The employer shall, when carrying out the work of logging, have workers engaged in the said work provide stakes, stoppers, etc., or take other measures to prevent the dangers due to falling or sliding of felled trees, processed lumber, dead or damaged trees, etc.
- (2) The worker engaging in the work set forth in the preceding paragraph shall take the measures set forth in the same paragraph.
Article 481 (Prohibition of Entry)
- (1) The employer shall not allow a worker to enter a place downward of place where carrying out the work of afforestation, tree felling, logging, tree collecting, or yarding by chute, or log conveying (hereinafter referred to as “work of afforestation, etc.” in this Section) where it is liable to cause dangers due to falling or sliding felled trees processed lumber, dead or damaged trees, etc.
Article 482 (Prevention of Dangers in Yarding by Chute or Log Conveying)
- (1) The employer shall, when carrying out of the work yarding by chute or log conveying, take the following measures:
- (i) Not to allow workers to enter the slideway while logs are being slid.
- (ii) When having workers handle logs that are stopped at stopping aprons, turning devices or other parts of the slideway, to have the said worker give a signal to those who are sliding logs at upper locations instructing that tree sliding be stopped, and have the said workers handle the said logs only after they have confirmed that sliding of trees has been stopped.
Article 483 (Prohibition of Work in Bad Weather)
- (1) The employer shall, when dangers regarding the implementation of the work of afforestation, etc., are forecast due to bad weather conditions such as strong wind, heavy rain, heavy snow, not have a worker engage in the said work.
Article 484 (Wearing of a Safety Helmet)
- (1) The employer shall, when carrying out the work of afforestation, etc., have the worker engaging in the said work wear a safety helmet in order to prevent workers from dangers due to flying or falling objects.
- (2) The worker engaging in the work set forth in the preceding paragraph shall wear the safety helmet set forth in the same paragraph.
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