Some more thoughts on Statutory Maternity Benefit vs. Confirmation of Service in addition to what our friend Mr. Madhu has stated above.
The accrual of all the benefits under the Maternity Benefit Act, 1961, is available to a woman employee who has worked for a minimum of 80 days during the preceding 12-month period prior to the expected day of delivery in the same establishment. Thus, this statutory benefit is available to all women employees subject to the above condition only, irrespective of the status of employment such as permanent, probationer, temporary, casual, or contract labor.
However, in Central and State Government Services, any long leave like E.L. or Maternity Leave availed during the probation period will proportionately extend the period of probation. It is better to refer to the service rules.