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(1) Persons under the age of eighteen, pregnant women, as well as persons for whom continuous shift work is contraindicated in accordance with a medical opinion, shall not be involved in continuous shift work.

(2) Persons with severe and accentuated disabilities, one of the parents (guardian, caretaker) with children under the age of four or children with disabilities, persons who combine work with parental leave provided by Article 126 and paragraph (2) of Article 127, and workers who take care for a sick family member on the basis of a medical certificate may perform continuous shift work only with their written consent. In this case, the employer is obliged to familiarize above mentioned employees in written form about their right to refuse from a continuous shift work.