Does Canada deny entry to visitor if parent is present illegally in the country?


Registered Users (C)
A friend of mine is in this situation. He and his son received Canadian visitor visas and he traveled to Canada. After arriving there he started to work there because a friend asked him to help out in his business and has overstayed. He would now like his son to visit him because he has not seen him for so long. Will the son be denied entry because his father has not left Canada on time? In the visa applications the Canadian authorities collected all the information on family members.