The main and distinct features and the important characteristics and criteria of the Law of Karma are as under:

(1) This law is Eternal:
It has come into force with effect from the date on which the sun started rising in the east since the inception of the universe and it will remain in force till the end of
the universe, the date on which the sun will stop rising in the sky. (These dates are not known and will never be known to anybody.)

(2) This law is Universal:
It is applicable to one and all the persons and creatures in all the countries in the world and the entire universe.Not that it is applicable only to Indians and that too only to Hindus because it was repeated and recited by Lord Krishna in Bhagwad Geeta on the battle field of Kurukshetra in India. It is applicable to all people from the human races, castes and creeds in the whole world.

(3) This law is Applicable:
In all the generations and eras of earthly cycles, Satyug, Treta, Dwapar and Kaliyug and in all the centuries - past,present and future.

(4) This law is Totally Perfect:
There has not been a single amendment in the law up-till now since time immemorial and there is not going to be a single amendment in the law till the end of the
entire universe. There is not a single 'proviso' in the law. There is no such mention or words like 'Provided that' or 'Not withstanding anything contained in the Act' etc.

(5) There is Not a Single Exception:
In this law of Karma, nobody can escape the canons of this law. Even the father of Lord Rama (incarnation of the omnipotent, omnipresent, omniscient God) could not
escape his destined death due to the forced separation of his son Rama. Shri Rama also in due respect to this law, did not interfere by giving extension of life even to his own father Dasratha at least for fourteen years till his return from exile. The omnipotent formless (NIRAKAR) God, once incarnated in the human form (SAKAR) as Rama, he too had to humbly respect and obey the Law of Karma and he did not show any favouritism or partiality to anybody,even to his own father.

The most important section of the law is

JO JAS KARAI SO TAS FAL CHAKH)4.

As you sow, so shall you reap.

The application of this law is beyond manipulation, intervention or corruptibility.

The wrong doer will definitely be punished for his wrong deeds. Nobody can escape the penal provisions of this law. There is no escapement and no exception is
allowed in its application. Similarly a pious man performing good actions will definitely be rewarded for his good deeds. Each and every good or bad action will have equal and appropriate reaction and will invariably rebound on the doer attracting just reward or punishment.