since the "hurdle" set up by Human Cattle department requires a minimum of four years.
In most large corporations, (and I speak from extensive experience here), these requirements are set by the line managers in the actual departments themselves. The Recruiting people generally look for whatever the line managers ask for.
There are always exceptions, but I've found in the majority of the companies where I've worked, every time I've had to hire, they (Recruitment) ask me (line manager) what I want to see. The job descriptions are also written by line managers in most cases as well.
The only possible interpretation of any research whatever in the `social sciences' is: some do, some don't. -- Ernest Rutherford