Is there a job that can only work half a day?

Yes, such as temporary workers in factories or supermarkets.

Extended data:

Work is a Chinese word with two parts of speech: verb and noun. As a verb, it means operation, action, operation, operation and so on. As a noun, it means engineering, production, commerce, tasks, occupations, people engaged in various crafts, etc. The concept of work is labor production, which mainly refers to labor. A person's job is his role in society. In socialist countries, work is the role orientation of every worker in social division of labor, which embodies social value and self-value. The so-called labor is the process in which workers transform the means of production into means of subsistence through labor (including manual labor and mental labor) to meet people's survival and the continuous development of society.