Dharam Di Kirat Karni is work ethics in Sikhism.

Sikhism lays stress on honest and truthful labor (Das Nauhan Di Kirat ). It considers work ethics as essential ingredient for harmonious society and recommend that a Sikh must earn his livelihood with the sweat of brow and share the earnest earnings with the needy. Sikh religion believes in the creed of worker and complete dignity of labor by leading a truthful and honest life. A Sikh should be up and doing. There should be no idle rich man and no exploitation of the poor by the rich. All must labor and must sweat to create the foodstuffs. This would eliminate poverty. The human body should be working for the well-being of the family and society but the mind has to remain tuned towards God. The Sikh is required to do an honest living through truthful means and live the life of a householder.

The Sikh Gurus believed that greatest of the evils and the worst of crimes is poverty. Thus, Guru Nanak Dev started the institution of Langar so that no body should sleep without food.

According to Sikh Rehat Maryada published by Shiromani Gurdwara Parbandhak Committee Amritsar,

“The true Sikh of the Guru shall make an honest living by lawful work.
Eat the food which is rightly earned.”
hku hlwlu bKorhu Kwxw ]
(1084)
Life of a parasite or a lotus eater is not admired in Sikhism. This would create poverty which is not the aim of Sikh faith. Sheikh Farid enlightens us not to keep an eye on another’s bread and wealth. He says,
“Seeing another’s buttered bread, let not thy mind long for it.”
PrIdw dyiK prweI copVI nw qrswey jIau ]
(1379)
It is believed that no one can be honest and wise on an empty stomach. Such person will not think independently. A person with an empty stomach cannot be morally sound. A starving person can commit unsocial and immoral acts. A parasite can be a victim of his bread-giver and can act as his master wants him to.
After 22 years of long travels, Guru Nanak Dev settled at Kartarpur and became a farmer just to earn his livelihood with sweat of his brow. When free from his teachings, he would work in his fields to earn honest living which were shared in Langar by the visitors.

The dishonest earnings are declared Haraam as sucking the blood of the poor.

Story of Bhai Lalo and Malik Bhago is very clear to prove that Guru Nanak did not eat food prepared by Malik Bhago as it was the result of his dishonest earning. On the other hand, Guru Nanak ate very simple food prepared by Bhai Lalo with honest means.

There is temptation in every materialistic person to lead an easy and comfortable life. There is desire to collect money overnight and through unfair means. The Gurus showed us the path that dishonest earnings pollute the mind and are hindrance in the way of pure and pious life. Sikhism emphasis truthful life and pious living.

Guru Nanak Dev says,

“If we take Right of another person, it is pork for Muslim and beef for Hindu .The Guru and prophet shall stand surety for those who do not eat flesh of a dead or carrion.”
hku prwieAw nwnkw ausu sUAr ausu gwie ]
guru pIru hwmw qw Bry jw murdwru n Kwie ]
(141)
According to Sikhism, dishonest earning is prohibited to a Sikh. It is like a blood which will stain the clean cloth.
Sikhism is a way of life. It is a guide for our daily routine. It believes that Truth is the highest of all, but higher still is the truthful living.

Sachon oarai sab ko ooper sach achar.
schu ErY sBu ko aupir scu Awcwru ]
(62 )
Making an honest effort is very essential in Sikhism. Guru Arjan Dev Ji says,
“Making an effort for the Name, thou shalt live and practicing it, thou shalt enjoy peace.”
audmu kryidAw jIau qUM kmwvidAw suK BuMcu ]
iDAwieidAw qUM pRBU imlu nwnk auqrI icMq ]
(522)
Guru Amar Das says,
“He who labors hard, earns honestly and gives something in charity with his hands, he, O Nanak, has found out the path of Truth.”
Ghal Khai kichh hathon de,
Nanak rah pachhane se.
Gwil Kwie ikCu hQhu dyie ]
nwnk rwhu pCwxih syie ]
(1245)

The golden rules gifted to Sikhism by Guru Nanak Dev Ji are:
1. Kirt Karni
Earning of livelihood through legitimate effort.
2. Wand Chhakna
Sharing of earnings in a spirit of love and service
3. Nam Japna
Practice of the Divine Name

Honest Kirt Vs Poverty in Sikhism
Sikhism attaches great importance to the human life, dignity and freedom of the individual and the sacredness of human personality. According to Sikhism, human life is a gift of God and this gift must be respected.

Guru Gobind Singh gives a trifacial doctrine:

An individual is the true source of power
He must not be enslaved by others
Peace, prosperity and happiness is the birth right and destiny of mankind
The Gurus stressed that co-operative and corporate living endeavour of individuals is essential to run social and religious life on principle of free, harmonious and happy living.
Sikhism lays stress on honest and truthful labor (Das Nauhan Di Kirat ) through legitimate and creative effort. It considers work ethics as an essential ingredient for harmonious society. It recommends that a Sikh must earn his livelihood with the sweat of brow and share the honest earnings with the needy and less fortunate in a spirit of love and service. Sikh religion believes in the creed of worker and complete dignity of labor by leading a truthful and honest life. It obligates a Sikh to share the earnings with needy and sick.

In Sikhism, non-observance of the obligations towards the community means alienation from the Divine.

A Sikh should be up and doing all the times. There should be no idle rich man and no exploitation of the poor by the rich. All must labor and must sweat to create the foodstuffs. The idea behind is that it would eliminate dependency and poverty. Sikhism does not encourage those who live as parasites on the society.

Every Sikh is required to do an honest living through truthful means and live the life of a householder. Although, human body should be working for the well-being of the family and society but the mind has to remain tuned towards God.

The Sikh Gurus believed that greatest of the evils and worst of the crimes is poverty. Thus, Guru Nanak Dev started the institution of Langar so that no body should sleep without food.

Sikhs are advised to earn their livelihood by honest means. They are not supposed to be a parasites on society. Non-earners become dependent on others and because of this, are influenced to think and act as their benefactors expect. Such a person is unable to think or act independently.

Furthermore, a Sikh's earnings, however large or small, should come from honest means. If a person is dishonest, and takes what is not justly his, the Gurus declare these earnings as the 'blood of the poor'. They are prohibited to Sikhs, just as beef is prohibited to Hindus and pork to Muslims.

There is temptation to live a comfortable life by earning money through unfair means. The Gurus want us to resist this desire by keeping in mind that such earnings pollute the mind in the same way that blood stains our clothes. Only honest earnings are like "milk" and hence "nourishing".

Kirat Karni is one of three primary pillars of Sikhism. The term means to earn a honest, pure and dedicated living by exercising ones God given skills, abilities, talents and hard labour for the benefit and improvement of the individual, their family and society at large. This means to work with determination and focus by the sweat of your brows and not to be lazy and to waste your life to time. To do these things without 'personal gain' becoming your main motivation - Make Simran and dedication of the work to God your main motivation. To perform Kirat is like saying a prayer or performing meditation. It is equal to your Sunday Service attendance at your place of worship.

On page 8 of SGGS, Guru Ji says: Those who have meditated on the Naam, the Name of the Lord, and departed after having worked by the sweat of their brows

-O Nanak, their faces are radiant in the Court of the Lord, and many are saved along with them! ||1|| And again on page 317

Deep within the hearts of His GurSikhs, the True Guru is pervading. The Guru is pleased with those who long for His Sikhs.

As the True Guru directs them, they do their work and chant their prayers. The True Lord accepts the service of His GurSikhs