Lets take Hendrick Motorsports for example. How many, total, work for Rick Hendrick. Thats everybody from the drivers to the janitors. How many people usually work for a team like that?
Hendricks employs over 400 people in his race shops. I would imagine Roush would have about the same number with the two and three car teams having a few less.
I seem to recall seeing somewhere that Yates has around 200 employees in his shops
Hendricks employs something like 70 people just in his engine shop.