Hi,
Rajat's points are accepted. Here's another bit of logic.
When we issue an "offer letter," it represents a stage that a recruitment decision has been made, all documents, certified copies, photographs, etc., have been received. The date of joining is also settled. The appointment letter is not issued at this stage as often we have found that the candidate (mis)uses the letter to bargain with his employer for a raise. He may or may not have resigned.
It is to protect mutual interests and avoid probable misuse that we issue the appointment letter ONLY after the candidate actually joins employment. And we do ensure that he receives the letter on the first day he joins and makes a joining report in the standard format. We feel it is a cautious but safe approach.
The appointment letter is a contract of employment and, therefore, stipulates besides the essentials mentioned by Rajat, the terms & conditions of employment between the candidate and the employer. Since the employer is empowered to act only on the basis of the covenants stated in the said letter or the applicable law, it needs to be rather detailed and comprehensive. It should be drafted to suit each organization's needs.
Regards,
Samvedan
December 14, 2005