I own a smaller sized company, and it's really depends on the job. The big thing is less specialized job fare well on longer hours.

Working in front of computers doing excels whole day? Yeah, tough luck, you won't get much more done in 8 hours compared to 6. The biggest problem is that shorter working hours reduce flexibility of the company a lot of client would call in undetermined hours and some would gave you business opportunity you won't get other way.

I tracked what my employees do all the time and I'm impressed. They work a few times harder than me, BUT only if they socialized enough on the job and have enough understanding to improve the work place with their own freedom.

Some people when they can't concentrate will start moping and dusting the office. Some would make teas and coffees, some would boxing stuffs while chatting with their fellow employee. Some would write promos for the company on posted them online. I only tell them to do in a day what amount of 2hours of work time in a day. And unless there's emergency NEVER tell them not to do something they currently doing.

But if you tell them exactly what to do and how to do it, very few are done in the same amount of time and turn over are high. Some people told me that if they do the same in their country or company they would be in trouble since asking someone to do extra job is a big no no, especially in the unionized area. I also deal with one person that straight up say that if I asked him to do ANY job that's not in his title then he would need higher wages. Thank god he's not my personal employee though. Smaller business like mine would only thrive because we are able to do things that can't be done by bigger corporations. And our company's turnover rate are very low.