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.
I think this is a fresh idea and a good starting point for further discussion. I will try to explain the difference between working hard and working smart using an example from software development. Let's assume you have a large set of data which you should sort (arrange elements of the dataset in a certain order). You can take a naive approach and use a bubble sort algorithm which is devastatingly slow. Or you can use something like the quicksort algo which is extremely fast. In the end you will get the same result but times spent will be strikingly different. Now you can try to apply this example to real life.