From your post, I infer that your establishment is under the TN Shops & Establishments Act, 1947. There is no distinction of persons employed under the Act with reference to their status of employment such as permanent, probationer, temporary, etc. As such, all the provisions under the Act relating to conditions of service uniformly apply to one and all, except the exempted categories.
Leave Provisions Under TNSE Act
The TNSE Act prescribes three kinds of leave, namely Casual Leave, Sick Leave, and Privilege Leave, each at 12 per annum. Besides, the employees shall also be allowed 4 National Holidays and 5 Festival Holidays every year under the TN Industrial Establishments (National and Festival Holidays) Act, 1958.
You can understand the preliminaries of procedural compliance like approval and calculation, carry forward of the unavailed portion of certain leave, registers, and forms to be maintained, etc., by going through both the Acts.