HR Correspondence Letter Formats (Please Share)

Dear Sir,
Would u please provide me some hr correspondence letter like following:
1. Joining letter format
2. Resignation letter format
3. Appreciation letter forma
4. Offer letter format
5. Appointment letter format
6. Salary increment letter format
7. Promotion letter format
8. Transfer letter format
9. warning letter format
10. Showcause letter format
11. Termination letter format
Thanks
Emdad
Dhaka Regency
Bangladesh
88-0171-333-2623

hai...
I would like to find a better format introduction letter to an educational institutions(Colleges) to hire candidates .......