Assumption in Argument for Four-Day Workweek

An article discusses the pros and cons of implementing a four-day workweek. The author argues that a reduced work schedule would lead to increased employee productivity and better work-life balance. They cite a survey showing that 70% of employees reported feeling less stressed when they worked fewer hours. However, critics of this idea warn that a shorter workweek might lead to difficulties in meeting deadlines and maintaining customer service levels.

What is the primary assumption underlying the author’s argument in favor of the four-day workweek?