What do you mean by working smarter?
If you are working as a programmer, then it may be right, as a smart programmer can do in few minutes something that a hard worker programmer that didn't think a lot about the code that he is going to write and about other ways of programming, would do in hours.
I think that if you want to be the perfect employer, you need to both work hard and work smart, That's the type of employers who earns the most and are the most successful in their life.