This paper explores organic waste separation behavior at the source when various motivation mech-anisms are implemented. Four mechanisms are applied in pilot areas to observe the differences inbehavior. A traditional mechanism is introduced to the community as the first campaign followed by avoluntary mechanism, which is another non-economic incentive mechanism. Next, two economic incen-tive mechanisms, namely, a reward mechanism and a community business mechanism, are applied.These four mechanisms were applied in the Nakhon Ratchasima metropolitan area, one of the largestcommercialized cities in northeastern Thailand, in 2010.