We've officially had the 40-hour week since the early part of the 20th century thanks to courageous and determined efforts of the labor movement during that era.
Advances in productivity haven't led to a substantial increase in wages nor reduction in hours worked for the average employee. An increase in wages in proportion with productivity should help boost an argument for reducing the work week from the now standard 5-day week/8-hour day to 4-day week/9-hour day. Or we could just make Fridays a half-day. Or turn Thursdays and Fridays into 6-hour days with an adjusted wage increase.
Actually, if you look at the evidence, the hours per work week, was falling BEFORE the labor movement.
Further, the claims that wages have not increased in proportion to productivity is entirely false.
If you were to add up all the money spent on employee benefits, and on government fees and government regulations, and add that to employee wages, we are paid a massive amount of money.
But the people on the left, are completely ignorant of economics.
Every time the employer has to pay the government more money for Social Security, Unemployment Compensation, Medicare, and so on, that means they pay the employee less.
Every time that the employer has to pay thousands of dollars to meet some government regulation, that means the employer has to pay the employees less.
So Leftists jump around saying we need more Social Security, we need more Unemployment Comp, we need more regulations, and then are shocked, just shocked that pay hasn't risen in direct relation to productivity.