DECLARE @t TABLE(fee_earner_id INT, fees MONEY)
INSERT INTO @t
SELECT 123, 23.54 UNION ALL
SELECT 245, 0.03 UNION ALL
SELECT 345, -0.46
SELECT fee_earner_id,CASE WHEN ABS(SUM(fees))<0.5 THEN 0 ELSE SUM(fees) END AS fees
FROM @t
GROUP BY fee_earner_id