The growing power of the elite, who controlled the economy, would give them the means to physically coerce people to move to Teotihuacán and serve as additions to the labor force.

控制着经济的精英阶层力量不断增强，这将使他们能够强迫人们搬到特奥蒂瓦坎，作为劳动力的补充。

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Generally, the Department of Labor reports entry requirements are minimal — must be 18 and a high school graduate, as well as physically able to do required tasks.

一般来说，劳工部报告中的入门权限都是最低的——必需年满18岁，高中毕业，可以完成要求的体力劳动。

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Now, I can understand that there are going to be limits to labor force participation within a population and that not everyone in a society is going to be physically or mentally able to work, but still, if there are no jobs and no work, what are people doing?

FORBES: Ongoing Developments in the Unemployment Conundrum

In 1960, half of the native-born men in the labor force were high school dropouts happy to do physically demanding, low-skilled work.

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Social Security was designed to give a few years of modest benefits to people whose bodies were worn out through coal mining, factory work and other physically demanding labor.

FORBES