Try this:
SELECT dbo.empmst1.id, dbo.empmst1.name, dbo.emp1.description, dbo.emp1.types,
dbo.emp1.types as types2, dbo.emp1.description as desc2
FROM dbo.empmst1
INNER JOIN dbo.emp1
ON dbo.empmst1.types = dbo.emp1.types
Notice you do not need the inner select as the table is already joined.