The former Manchester United midfielder and England captain is due to start working with Les Parisiens on Wednesday, and Zidane has lauded him for his professionalism and longevity in the sport.
"Beckham is someone who comes 45 minutes early to training and leaves a half an hour after everyone has left," Zidane told Canal+. "He is truly a great professional. Some players today could benefit from his level of professionalism.
"Now he 37-years-old, he does not play every game for 90 minutes, but is still capable of influencing any match in the 20 or 30 minutes he has. This is a man who loves the sport. At the age of 37, his passion is still there. The guy is class."
PSG boss Carlo Ancelotti revealed Beckham could make his debut against PSG rivals Marseille later this month. The two-time MLS Cup winner met his new teammates prior to Tuesday's 2-1 victory over Valencia in the first leg of their UEFA Champions League Round of 16 tie.