CASE
WHEN DATEPART(D,DATEADD(DD,90,PS_EMPLOYEES.HIRE_DT)) = 1 THEN DATEADD(DD,90,PS_EMPLOYEES.HIRE_DT)
ELSE DATEADD(DD,(1-DATEPART(D,(DATEADD(MM,1,DATEADD(DD,90,PS_EMPLOYEES.HIRE_DT))))),(DATEADD(MM,1,DATEADD(DD,90,PS_EMPLOYEES.HIRE_DT))))
END
Finally got it to work !! Just in...