Not being punished for being sick is a basic human right.
The International Covenant on Economic, Social and Cultural Rights entered into force in 1976. The human rights that the Covenant seeks to promote and protect include:
the right to work in just and favourable conditions;
the right to social protection, to an adequate standard of living and to the highest attainable standards of physical and mental well-being;
the right to education and the enjoyment of benefits of cultural freedom and scientific progress.