The law of karma is inevitable. But there are many ways by which we can escape from the chain of the law of causation and Karma Yoga is one of those ways.
Work unto death -- I am with you, and when I am gone, my spirit will work with you. This life comes and goes -- wealth, fame, enjoyments are only of a few days. It is better, far better, to die on the field of duty, preaching the truth, than to die like a worldly worm. Advance!
-Swami Vivekananda