I worked at LabCorp for 11 years before quitting. I went through 17 different reorganizations (no exaggeration) and 20 different supervisors.
Reorgs are standard operating procedure in LabCorp IS. Reorgs are how mediocre managers stay employeed (or are promoted), talented IS professionals get frustrated enough to quit (or are RIF'ed), and new suckers are hired in at lower salaries.
Simply put, reorganization is the company culture at LabCorp IS.