What is the treatment of meter readers in Shenyang Gas Company?

Generally speaking, the salary of my sister who works there is really average, but at the beginning and end of each month, she hardly needs to go to work during the day, but at night, she looks at her watch very tired and comes home very late. If she doesn't complete the task, she will also deduct the money, but the gas insurance she received for half a year has a commission, and she has two more incomes a year. During the Chinese New Year holiday, she will also issue items and shopping vouchers, but the amount is not fixed.