Overtime is voluntary and employees have the right to refuse. There is at least one case (SEAWUSA v Trident Steel (1986) 7 ILJ 86 (IC)) where the court held that an employer can dismiss employees who persistently and unreasonably refuse to work overtime. That is even if there is no contractual obligation to do so.
Individualistic cultures are oriented around the self, independent instead of identifying with a group mentality. They see each other as only loosely linked, and value personal goals above that of the group.
Material culture is a term developed in the late 19 and early 20 centuries, that refers to the relationship between artifacts and social relations. In contrast, non-material culture does not include physical objects or artifacts. Examples include any ideas, beliefs, values, or norms that shape a society. When sociologists talk about norms, they are talking about what's considered normal, appropriate, or ordinary for a particular group of people.