Cibele Rizek (Institute of Architecture and Urbanism (IAU), University of São Paulo, Brazil) compare from the historical contexts of work and platform work: gray zones, informality and formalization of precariousness comparer from contexts historiques du travail et du travail of plateformes: zones griss, informalité et formalisation of La precaréive Analysis in the historical context of work and Platform Work: Gray区域,非正式性和PREARITY的形式化Cibele Rizek (Institute of Architecture and Urbanism (IAU), University of São Paulo, Brazil) compare from the historical contexts of work and platform work: gray zones, informality and formalization of precariousness comparer from contexts historiques du travail et du travail of plateformes: zones griss, informalité et formalisation of La precaréive Analysis in the historical context of work and Platform Work: Gray区域,非正式性和PREARITY的形式化