Abstract
This paper examines the legality of designating Sunday as the fixed day of weekly rest, using Germany as a case study while also considering relevant European and international law. It then explores the ongoing debate on the flexibilisation of Sunday work under German working time law, which imposes stricter limits than Article 5 of the European Working Time Directive. The growing push for flexibility – particularly in the context of remote and home-based work – is critically assessed, along with proposed legal reforms at both the German and European levels. The paper concludes by advocating for the retention of Sunday as a fixed rest day, warning against the gradual erosion of workers’ health and safety rights under the guise of flexibility. The issue’s relevance clearly extends beyond the German legal context.