This idea is backed up by survey data from America collected by Pew, a polling company: those who earned just a bit more than the minimum wage were the most resistant to increasing it.
Hourly wage of an employee is derived by dividing the amount of wages paid by the number of working hours of the employee in the survey period.
雇员的每小时工资，是把统计期内付给雇员的工资，除以该雇员的工作时数而得出。
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The paper empirically investigates the relationship between occupation segmentation and gender wage differentials in urban China, using the 1999 urban household income survey.