家庭主妇 低阶层人士

有的，薪水太低，或家庭主妇

There may be individuals who have never reported their income for tax purposes, either knowingly or unknowingly. It is important for all employees to abide by the tax laws of their respective countries to avoid potential penalties or legal consequences. If you believe you may have missed reporting income in the past, it is advisable to consult with a tax professional to rectify the situation.