Technology leads to advancement. AI is a good example. Usually, robots can be used in the industry which will help/assist the authority in getting rid of the paying salaries to employees. Qualitative and quantitative work will take place. Even though robots don't require rest there's a need to do so for their proper functioning. Ultimately, the need for manpower will diminish. Work like food delivery, cleanliness, construction site jobs, in malls for billing and guide the visitors, many things can be done by robots. There are some jobs like teacher, doctor, police and judge that cannot be replaced by robots.