HR Policies In IT Companies

I'm a MBA student and currently working on a project titled "Benchmarking the practices i IT industries"
I would like to know about various policies such as
1) Performance Appraisal policy
2) Leave policy
3) Policy on certification reimbursement (amount reimbursed)
4) Exit interview policy & form
5) New joining policy (with regards to orientation & Turn around time)
6) On site policy (period, kind of visa, pay policy)
I want this info in regards with service companies such as Infosys, TCS, atyam, Wipro, IBM, Patni, Accenture, Cap Gemini etc.
Please help me out with the project..

hi.
i am also doing MBA and i have project on same topic. kindly pass me some info or your project if possible with me. my email id is [Login to view].
my project deadline is near and i need some info asap.
Thank you