As pointed out by Ashutosh, the Terms & Conditions of the Appointment are important. During Probation Period, which is 3 to 6 months in most of the Companies, the Company reserves the right to terminate without specifying reason. Moreover, if the appointment says that the post is purely temporary and such a specific period is mentioned in the Appointment Letter, then their no either legal or moral course, but to exit. For example, if you are appointed on a place arisen on account of Maternity Leave, then the post is evidently temporary.
In other words, the post on which you are appointed should not be of casual/temporary nature and you should have served for the minimum of 120 days (6) months, for the Labour Commisioner to be convinced that the post was not temporary. On the contrary, if the post is permanent, bus still you have worked less than min. 120 days, still you stand o lose.
My above explaination should clarify where you stand.
Regards,
- Abdul Quadir