Why don't people's hospital cleaners pay so low and help buy social security?

Low level of education, overage. The people's hospital cleaner recruitment threshold is low, there is no academic requirements, and the work content is relatively simple. Most of the cleaners in people's hospitals are rural hukou, and they are all elderly people, but they are past the age of paying social security. Therefore, the wages of cleaners in people's hospitals are so low, and the reason why they don't help to buy social security is because of their low education level and overage. A cleaner is a cleaner, which refers to the workers who are responsible for cleaning the place. Their duties include cleaning, collecting garbage and sending it to the designated collection place.