Family problems

This is one of the most serious problem my family has had. My dad takes his work really seriously and he had my uncle helping him out because they are both friends. My uncle is from the other side of my family. At the beginning everything worked to perfection, my uncle is really lazy but does his work well whenever he wants. My uncle was supposed to get to the office at 6 every single morning, my dad had to take us to school because we didn't drive yet, therefore my dad got to the office like at 7:30 or so. My uncle every morning got to the office at 7 because he knew my dad wasn't going to get there until half hour later. When my big brother became a senior they gave him a car so he took us to school every morning. My dad thanks to this went to the office now at 7. The first time he got there my uncle wasn't there and he thought maybe he had something to do, but since this continued and continued my dad decide to put a camera on the office to see at what time exactly my uncle got to the office. Like a week from putting the camera my dad realized my uncle was a liar and got to the office late, my dad asked him at what time does he get to the office and that he wont get mad at the answer. My uncle lied and told my dad he got to the office at 6 so my dad showed him the tape and gave him an opportunity, the very next day my uncle got late again so my dad fired him and they don't talk since.