It's good to applaud someone's work ethic.
Jim knows his employee spent the whole night finishing an important task for work, and they arrive early the next day.
Jim wants to address his employee.
Jim praises the employee for the great work they did and names them as employee of the month.
Jim greets his employee normally but doesn't acknowledge the hard work they put in yesterday.
Jim's employee feels that their efforts at work are noticed and appreciated.
Jim's employee feels that Jim doesn't appreciate them and the hard work they do for him.