Bangladesh

A socialist economic system shall be established with a view to ensuring the attainment of a just and egalitarian society, free from the exploitation of man by man. (Art. 10)

It shall be a fundamental responsibility of the State to attain, through planned economic growth, a constant increase of productive forces and a steady improvement in the material and cultural standard of living of the people, with a view to securing to its citizens –
(a) the provision of the basic necessities of life, including food, clothing, shelter, education and medical care;
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(d) the right to social security, that is to say, to public assistance in cases of undeserved want arising from unemployment, illness or disablement, or suffered by widows or orphans or in old age, or in other such cases. (Art. 15)

The State shall adopt effective measures to bring about a radical transformation in the rural areas through the promotion of an agricultural revolution, the provision of rural electrification, the development of cottage and other industries, and the improvement of education, communications and public health, in those areas, so as progressively to remove the disparity in the standards of living between the urban and the rural areas. (Art. 16)

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(2) The State shall adopt effective measures to remove social and economic inequality between men and women and to ensure the equitable distribution of wealth among citizens, and of opportunities in order to attain a uniform level of economic development throughout the Republic.
... (Art. 19)