So you're happy with their work but don't know if they have enough work?
The way of testing that is by starting to give them more work until you get a) push-back from them over and over again, b) they start missing deadlines, and c) the quality of the work drops. When you get all three you know you are getting max output.
Secondly, have a rewards program. Just like you would not be in business if your business was not in the business of making money, they would not be working, not for you at least, if it weren't for the paycheck. Having a rewards program based on your objectives will closely align all parties' goals.
Finally, did you not perform their job at any stage? Do you really have no clue about how much effort it takes to complete each aspect of their job? If yes, go by those estimates to figure out what it takes.
The way of testing that is by starting to give them more work until you get a) push-back from them over and over again, b) they start missing deadlines, and c) the quality of the work drops. When you get all three you know you are getting max output.
Secondly, have a rewards program. Just like you would not be in business if your business was not in the business of making money, they would not be working, not for you at least, if it weren't for the paycheck. Having a rewards program based on your objectives will closely align all parties' goals.
Finally, did you not perform their job at any stage? Do you really have no clue about how much effort it takes to complete each aspect of their job? If yes, go by those estimates to figure out what it takes.