According to Euro News, the dedicated manager would regularly arrive at his branch in Barcelona, Spain by 5 am and spend hours ensuring things around the store were in order before the rest of the staff arrived.
Metro reports he was eventually fired for violating the company's rules on unpaid overtime and for being in the store alone - both of which are, apparently, not allowed.
However, at an employment tribunal disputing the sacking, Jean's lawyer Juan Guerra argued that his bosses never told Jean - who had worked for the company for 12 years - not to come in early.
Mr Guerra also argued that his client was under pressure to hit sales and performance targets, work that required "time and dedication," adding it was the company that ultimately benefited.
The case is still being heard and the tribunal could decide to reinstate Jean's job.
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