These "irregular workers" make up about 10 percent of the nonagricultural work force.

这些“非正式工人”约占非农业劳动力的10%。

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Irregular migration from the MENA Region currently is subjecting migrant workers to poor living and working conditions, substantial health and income risks, and social marginalization.

目前来自中东和北非地区的无序移民使移民工人面临恶劣的生活和工作条件、严重的健康和收入风险、以及社会边缘化的问题。

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On top of that, negative emotions associated with the holiday season being over and two weeks of irregular sleeping patterns could lead workers to feel tired and lacklustre.

最明显的是，因假期结束而引起的负面情绪和长达两周不规律地作息会让人们感到疲劳没有生气。

youdao

"What we are finding is that migrant workers, particularly irregular migrant workers, very often young women, around the world are at tremendous risk of serious exploitation," .

VOA: standard.2009.08.21

Shift workers whose sleep is disrupted by working at night or working long or irregular hours also face increased risks.

CNN: How to combat drowsy driving