Systemic problems
The company has a policy that anyone who has finished university / college in the past number of years must be processed through the graduate recruitment office which is run by a long time friend of Ellison which (unlike any other department) reports directly to Ellison.
An Oracle manager once complained to me that he couldn't deal directly with potential applicants or see all of the applications for a position. Strangely, the graduate recruitment office almost always sent over piles of applications that all had the same racial, visa status and gender profile. They also have a policy forbidding employees discussing their compensation.
That's how they rig the system, make it impossible to complain and tightly control the information to get legal protection.