Right livelihood is refraining from livelihood or jobs that harms other beings, such as selling weapons, poison etc. that could harm others. So it can be said that right livelihood is an extension of the rules of Right Action to one’s role as a breadwinner in a society. In the earlier reply to your query @ Dhammadhatu had mentioned the five kinds of livelihood that are discouraged for Buddhists. There has to be a reason to limit its definition to these five trades, without expanding on it, like what Buddha’s cousin & brother-in-law, Devadatta did, in coming up with stricter ascetic rules for the sangha.
Those five kinds of livelihoods are discouraged because they contribute to the ills of society and because they violate the principles of respect for life. It is very important to remember that dealing in intoxicants violates the principle of respect for the welfare of others. This contributes to the insecurity, to the suffering and discord in society.
The practice of good conduct creates within the individual an inner sense of peace, of stability, of security and of strength. Once he has created that inner peace, he can then fruitfully and successfully practice the other steps of the path. He can cultivate and develop meditation. He can achieve wisdom only when he has created both inwardly and outwardly in his relationships with others and in himself the necessary foundation of good conduct.
As Buddhists, it is our duty to practice, to follow the rules of good conduct as much as we can, but to over-analyze it, to include GMO foods etc. may sound a bit far-fetched. For the practice of good conduct, for the observance of moral rules, mental development is necessary. This is the next phase of the Path.
