One negative consequence of using automation to improve manufacturer product is that

One negative consequence of using automation to improve manufacturer product is that  factories often need fewer workers.

Explanation:

Technological and industrial advances have led to a gradual but constant automation of industrial production processes, in which a large part of the manufacturing stages of certain products has gone from being made by human beings to being carried out by specialized machines. This situation, while increasing productivity, reducing the risk of error and decreasing production times, is absolutely contrary to the interests of workers, since human jobs are being replaced by simple automated machines.

This situation is generating unemployment in certain sectors of the labor market, which go from working in manufacturing to losing their position in the face of process automation. In turn, many jobs are changing: today, more specialized technicians are required in the development, maintenance and repair of these specific machines, while the number of manufacturing workers is constantly decreasing.

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