Some more thoughts on Statutory Maternity Benefit vs. Confirmation of the service of the employee concerned 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 preceeding 12 months period prior to the expected day of delivery in the same establishment. Thus this statutory Benefit is available to all the women employees subject to the above condition only irrespective of 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, Maternity Leave availed during the probation period will proportionately extend the period of probation. It is better to refer to the service rules.