The problem, from an employer’s point of view, is that engineering or CS plus a lot of business courses or a second major (as opposed to a few electives) can signal that the person is mostly interested in climbing corporate ladders (using engineering or computing as a mere stepping stone) rather than being interested in making a career of engineering or computing.
Here is an example:
http://talk.collegeconfidential.com/discussion/comment/15205580#Comment_15205580
http://talk.collegeconfidential.com/discussion/comment/17451689#Comment_17451689
http://talk.collegeconfidential.com/discussion/comment/17456153#Comment_17456153