As many researchers suggest, there are some asymmetries between Condition A and Conditions B/C. First, Condition A is a positive coreference binding, whereas Conditions B and C are negative noncoreference bindings. Secondly, Condition A exhibits optional reconstruction whether the related movement rule is A-movement or A`-movement, while Conditions B and C exhibit obligatory reconstruction when A`-movement is involved. I argue that these asymmetric properties can be properly described in a derivational approach. However, the Binding Theory in what is called a strong derivational approach, is too strong to account for various binding relations. This is why an alternative Binding Theory is needed. The asymmetry between A-movement and A`-movement in Conditions B and C, is originally related to a theory of Case (cf. (Lebeaux 2009)). I adopt his idea in part, but my derivation for binding is quite different from his. Conditions B and C are not required to apply at every point in the derivation as suggested by Lebeaux, rather they must apply only to some point in the derivation, to which Case is assigned. Based on a derivational approach, I propose an alternative Binding Theory, in which Case position plays a crucial role. (Korea National Open University)