Use Group By to summarize, and add up all of the numeric fields. Use ISNULL in case any of the numerics are NULL, it doesn't skew the results. Something like this.
SELECT SSN, SUM(ISNULL(field1, 0) + ISNULL(field2, 0) + ISNULL(field3, 0)) AS Total FROM Employees GROUP BY SSN
I don't know what...