Hi Chandan,
For this we can use IT 0019 Monitoring for Task, if you maintain the IT 0016 after saving the record system will take your to IT 0019 for next Task. so instead of using IT 0016 use IT 0019.
if you want to use IT 0016 only then you have to consider,
Contract Type - 02 Limited (Field - CTTYP) and End Date (Field - CTEDT) and remaining Probationary period, Ee & Er notice period's.