Yoga does not need karma. Yoga is to go beyond karma. Why karma yoga has been brought in is to bring about balance in a person. Whatever we call as our awareness, our love, our experience or our glimpses of our reality, if it has to be sustained, the path of non-doing is a very wonderful path, but it is very slippery. Extremely slippery. It is the simplest and the most difficult. It is not difficult but it is not at all easy, because it is simple – right now, here and now. But that here and now – how to get it? Whatever you do, it is not in your hands. It is never going to be in your hands. But your hands need something right now, you need to hold something. That is why the crutch of karma yoga.
Without the crutch, most people will not be able to walk. There are a few beings who can walk without the crutch from the first moment. They are very rare beings. Everyone else needs the crutch to manage your awareness. Without this, most people are incapable of remaining aware. So karma yoga is brought into your life to properly temper sadhana with the right kind of action. Karma yoga has unfortunately been described as service, but it is not so. It is a way of undoing the impressions that you have gathered. If you can joyfully involve yourself in any activity, that is karma yoga. If you do it with great effort, only karma will come, no yoga will happen!
Generally it is through various activities that you perform that you get entangled and enmeshed with life. But if the activity becomes a process of liberation instead of entanglement, it is karma yoga. Whatever it is, the nature of the activity is not important. When you do something only because it is needed, where it does not mean anything to you but you are capable of involving yourself as if that is your life, it transforms you and action becomes liberating.
Karma means action. If action has to become yoga, action should be liberating. If your activity has become a process of binding yourself, it is karma. So how you are performing the activity is what makes the difference. If you are crawling through your work, that is karma. If you are dancing through your work, that is karma yoga.
Source: Isha Foundation