I want to do some management job since I have 3-year's work history.

我想做管理方面的工作，因为我有3年的工作经验。

I want to do some management job since I have three-year's work history.

我想做管理方面的工作，因为 我有3年的工作经验。

And when fifty years ago being employed meant working as a factory laborer or as a farmhand, the employee of today is increasingly a middleclass person with a substantial formal education, holding a professional or management job requiring intellectual and technical skills.

50年前，被雇佣的意思是当工厂工人或干农活，现在越来越多的雇员是受过大量正规教育，从事着有知识、有技能要求的专业性的或管理性的工作的中产阶级。