Mcdonald's recruits retirees to implement flexible working system. What effect does this working system have on efficiency?

I believe everyone has been to McDonald's. This is a western-style fast food restaurant, specializing in fast food. Most of them are fried food. With cola and other drinks, it is not delicious, but there are still many customers who have nothing to do. Recently, McDonald's actually advertised for retirees and implemented a flexible working system. This news also surprised many people, because in order to apply, such jobs must reach retirement age before they can take up their posts. Women are required to be over 50 years old and men over 60 years old, and retirement certificates are required.

Then the question is, what kind of impact does flexible working like this have on efficiency? Let's have a good talk about this topic. At retirement age, people's physical function is not as good as before, and they will be arranged to retire and enjoy their old age. If we continue to arrange work for them, the efficiency will definitely not be achieved, and it will have a lot of impact on their health. This is not good news.

However, there are still many problems in hiring retirees to participate in service work. First, their hands and feet are inconvenient, and then their work. What should they do if they are too tired and unwell? Although the flexible working system is implemented, working four to five days a week and only four to eight hours a day, in my opinion, retirees should enjoy their old age rather than continue to work. Although in a restaurant like McDonald's, they don't need to do anything for customers, they just need to clean and clear the table. But I think a more dynamic place like this should recruit young people to do this job, which can not only communicate well with customers, but also promote the overall atmosphere in the store. If all the old people work, they will be lifeless, which may make young people choose to eat in other stores.