Determine Min & Max Date in Oracle over a group with same empid

how do I determine the min(eff_from_date) and the Max(eff_to_date) over a group of records for the same employee id?

What is the correct syntax?
EmpID       NAme                          eff_from_date  eff_to_date   Change Date
123564   SMITH, JOHN                      06/03/2017        12/31/2049      01/01/2018
666601      JOHNSON, JOHN         07/05/2017        07/07/2017      07/04/2017
666601   JOHNSON, JOHN         07/08/2017        12/31/2049      01/01/2018
56464     Jackson, Jim                   06/01/2016      01/6/2017    01/10/2018
56464     Jackson, Jim                   01/06/2017      12/31/2049       01/10/2018
So what is the best method to group by EmpID and determine the min(eff_from_date) and the Max(eff_to_date)?

Thanks,

Karen