Create two custom lists: 1 for Emp ID and 1 for Name. This will allow you to drag the fill handle to fill out the items in a pattern. For the dates, select all dates in Start column and drag down as far as needed (Opt for 'Copy Cells'). Do the same for End date column.
Thanks Patrick for responding, I am right now copying manually the data that is required. However, I have a 700 rows of data, which I have to replicate 120 times, if I am creating last three months data. Hence, it becomes tough for me to do that every time when I have an Ad hoc work. If I have a formula or VBA to repeat a set of rows, it would be helpful.