People increase their enthusiasm for work even more when they are praised. There are various expressions to praise someone.
For example, sasuga means "Just as I expected!," ii desu ne means "That's very good," subarashii means "Great!" and o-migoto means "Excellent!"
But you should be careful because compliments like these may not only have a positive effect: they can sometimes lead to a deterioration in human relationships. If you repeat expressions of praise thoughtlessly, it may sound like sarcasm rather than praise, or suggest that you are blaming or despising the other person.
Also, please remember two basic rules: when you praise someone, do it in front of others; and when you tell someone off, do it when nobody else is around.
