The passage argues that four-day work week will benefit companies, the whole economy, and individuals. But in the lecture, the professor holds a totally different view that no one will be beneficial from the new work week.
Firstly, the passage says that companies will get more profits for employees can work more effectively. However, the lecture points out that four-day workweek will lead to spend more. That is because companies have to spend more money on training, medical benefits, office positions, even new computers.
Secondly, the passage claims that the whole economy will benefit, for the four-day workweek is a way to reduce unemployment rates. The lecture refutes the idea completely. Admittedly, there are more available jobs, but companies will prefer to let employees work overtime to finish them for hiring new staff is too expensive. In addition, the companies may lift their expectation that staff finish five-day jobs within four-day.
Thirdly, the passage suggests that individual employees can benefit from it. Though the four-day workweek can provide more leisure time to employees, the lecture argues against the passage. Comparing to five-day workers, the four-day workweek employees may be the first one to be fire during economic depression. And they will have less chance to promotion because companies wish that managers could be on duty every work day.