Dear Mr. Gurupreet,
Offer letter is different from Appointment letter. After shortlisting the candidate for the job companies do give the offer letter which contains broadly- the total CTC, period required to join, designation etc. The candidate may or may not accept the offer. Once he accepts the offer the next stage starts for him i.e. he has to tender resignation to the present job, get it accepted by the employer etc. and from the new employer's point of view he can put an end to the recruitment process since the candidate has accepted the offer.
Appointment Letter: It is a document which contains the detailed breakup of the CTC offered in the offer letter, all the terms and conditions such the eligibility of leaves, retirement age in the company, condition that he may be transfered to any branch or location of the company, notice period to be given in case of resignation etc.
As rightly said above some companies do give the appointment letter in the beginning itself with out offer letter.
D. Phani Kumar
DGM-HR
VASAVADATTA CEMENT
(A Unit of B.K. Birla Group of Companies)
Sedam, Gulbarga Dist., Karnataka.