This 'state of emergency' also stimulates creativity and innovation, not only at the economic but also in social and moral realms which are easily overlooked by economic studies of crisis situations. Bearing in mind the danger of presenting an overly harmonious view of social care systems this paper debate how informal practices sometimes support national economies, how people engage simultaneously in formal and informal systems of care and how these strategies are so effective in producing an effective way to face crisis situations. Care thus becomes a factor of economic sustainability (helping to overcome precarious situations); a factor of social sustainability (providing to people in need); and also of emotional sustainability (well-being).