62 hour work week for Oncologists? Seems a bit excessive...

I just came across these figures: http://mdsalaries.blogspot.com/2009/07/work-hoursweek-by-md-specialty-2008-ma.html It seems that oncologists work much more than I had imagined. Do these numbers seem correct? If so, is there anything oncologists can do to lower the number of hours worked, or are these hours pretty set by the demands of the employer?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Internal Medicine and IM Subspecialties Source Type: forums