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In English-speaking countries, a blue-collar worker is a working class person who performs manual labour. Blue-collar work may involve skilled or unskilled manufacturing, mining, sanitation, custodian work, oil field, construction, mechanical maintenance, warehousing, firefighting, technical installation and many other types of physical work. Often something is physically being built or maintained. In contrast, the white-collar worker typically performs work in an office environment and may involve sitting at a computer or desk. A third type of work is a service worker (pink collar) whose labour is related to customer interaction, entertainment, sales or other service-oriented work. Many occupations blend blue, white and/or pink industry categorizations. Blue-collar work is often paid hourly wage-labor, although some professionals may be paid by the project or salaried. There is a wide range of payscales for such work depending upon field of specialty and experience. ==Clothing color== Industrial and manual workers often wear durable canvas or cotton clothing that may be soiled during the course of their work. Navy and light blue colors conceal potential dirt or grease on the worker's clothing, helping him or her to appear cleaner. For the same reason, blue is a popular color for boilersuits which protect a worker's clothing. Some blue collar workers have uniforms with the name of the business and/or the individual's name embroidered or printed on it. Historically the popularity of the color blue among manual labourers contrasts with the popularity of white dress shirts worn by people in office environments. The blue collar/white collar color scheme has socio-economic class connotations. However, this distinction has become blurred with the increasing importance of skilled labour, and the relative increase in low-paying white-collar jobs. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Blue-collar worker」の詳細全文を読む スポンサード リンク
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