Probably, you have not been a member of ESI Scheme, then you cannot be a beneficiary. If you are a member of the scheme for the contribution periods given below you are entitled to the benefit period as shown against each.
Contribution Period Cash Benefit Period
1st April to 30th Sept. 1st Jan of the following year to 30th June
1st Oct to 31st March of the year following. 1st July to 31st December.