For this use Worker.dat
Please find the below sample template :
Sample file for Worker EIT.
METADATA|WorkerExtraInfo|PersonNumber|EffectiveStartDate|EffectiveEndDate|InformationType|PeiInformationCategory|CategoryCode|FLEX:PER_PERSON_EIT_EFF|EFF_CATEGORY_CODE|_CASTE(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_COMMUNITY(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_EX_SERVICE_PERSON(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_HEIGHT(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_PAN_APPLIED(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_PAN_REFERENCE_NUMBER(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_RESIDENTIAL_STATUS(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_RESIDENTIAL_STATUS_Display(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)|_WEIGHT(PER_PERSON_EIT_EFF=HRX_IN_MISCELLANEOUS)
MERGE|WorkerExtraInfo|PS5|2010/11/02||HRX_IN_MISCELLANEOUS|HRX_IN_MISCELLANEOUS|PER_EIT|HRX_IN_MISCELLANEOUS|PER_EIT|Test123|Backward|||||||