Would businesses function better if they tried this?

I know in Europe a typical work week lasts for about 35 hours. They take on average 8 weeks of vacation a year. Here in America, we're lucky to get 2. European businesses have more productivity because they aren't understaffed. Do you think it would be wise for all businesses to operate 24/7 and have 3 8-hour shifts? That way they can get more productivity. Further, I think it should be against the law for businesses to make their employees to work overtime. I know Home Depot practices that policy. What do you think? Should they have the rotating shifts and have a plentiful staff to meet quotas? Or should we continue allowing greedy CEO's to cut down on their staff and overwork their employees like slaves in a sweatshop to make a profit. I don't know about the other 49 states, but in Texas the labor laws are pretty thin.