Check out A.J. Burnett's stats from 2002-03
2002: 39 G, 29 GS, 204.1 IP, 7 CG (league leader)...his first year over 200 IP
2003: 4 G, 23 IP (Tommy John surgery)
I agree that it all depends on the orginazation, but IMO I agree with limiting a pitchers workload, especially the young pitchers who are going to be valuable to you down the road, be it playoffs or years to come. What good is a young prospect if you work them so hard that their arms are falling off?