作業能力の年令的推移に関する研究
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概要
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By making consecutive yearly investigations of the labor system and the individual records of all the workers, or those engaged in some special works, or those who retired by age limit system, a study was carried out in a certain Steel Works on the changes of working capacities of workers according to age. The results obtained are arranged by the under-given items as follows:- 1. The intensity of works, the surrounding circumstances, distribution of workers. 2. Groups of workers classified by age and the length of service. 3. The effects of the quality of works upon the working age and the length of service. a. Intensity of works……Heavy muscular workers in Silicon Steel Sheet Mill are mostly under 44 years old, and the settling down rates low. b. High temperature work ……Of the high temperature workers the percentage of those who are more than 35 years old and have been working for more than 14 years is low. c. Special kinds of works: Those who are to work at high places or with quick movements, and those who are to do precision work are very few after 40 years of age. 4. Counter steps for workers of advanced age: a. How the declining symptoms of working capacities appear as workers grow old. i. Some peculiar functions eye-sight and good memory, for example, begin to decline from 47∼48 in years, and, on the whole the heavy muscular workers seem to precede the medium muscular workers 1 or 2 years ahead about this point. ii. Length of life: The remaining lives of those who have had an experience of working as heavy muscular and high temperature workers while in service are generally shorter. b. Transferrence of workers of advanced years: In the case of transferring workers of advanced age from heavy musular labor to light muscular one the majority of them are those who have become decrepit with old age, and not equal to muscular work on account of the weakness of body, or those who volunteer to be transferred. c. Counter-measures now being taken up and points desired to be realized: i) Workers of advanced age shall be enabled to work by rationalizing of working shops. ii) Working places suitable for old workers shall be prepared in advance. d. Problems of age limits system: About this no thorough investigation has been made yet, but the age limits of the workers of this steel works are 55.
- 社団法人日本産業衛生学会の論文