I have joined a new company as a Sr.HR Executive. Before joining they told me that on the day of joining I will get a offer letter and after completion of probation they would give me an appointment letter. Now I have come to know that there is nothing like an appointment letter but they just give a confirmation letter. The company is ISO certified. They informed me that they will give me all company benefits like PF,Bonus,21 Paid Leaves after I am confirmed.I would like to know that is this OK or is there any risk. Is my job insecured?