SHELF-LIFE of an employee in BPO

I got a mail today and the mail took me to a post. I found the research interesting. My view was not from the perspective to agree or not to agree with the report. Te article definitely throws some interesting perspective on the employee productivity in a transaction (often mundane and/or repetitive) based BPO. Is there a Shelf Life for BPO Executives? While the web post do not refer to the author, I am assuming that author is one Mr Nitish Verma. I got the mail from him. I look at from the point of view of how to extend the "shelf life" or create new "shelf life" by investing on the employee competency. A job enrichment can also make them productive in long run. This probably explains on competency and remuneration scale most BPOs have very large base at the "bottom of pyramid".