Final answer:
Historically, high alcohol consumption on Sundays led to work issues on Mondays. Reduced Saturday work hours and union efforts eventually secured a two-day weekend for workers to address this.
Step-by-step explanation:
The question deals with historical labor practices related to alcohol consumption and leisure time. In historical terms, alcohol consumption was high on Sundays, the typical day of rest for workers in Europe and America.
Employers noted the negative impact of this, with many workers arriving on Mondays hungover or still intoxicated. To address this, work hours were reduced on Saturdays with the hope that earlier drinking would lead to earlier cessation.
This change, along with the influence of labor unions, eventually led to the establishment of a two-day weekend for workers.