On Wednesday September 26, CESI held a further edition of its lunchtime debate series ‘CESI@noon’, this time on the very heated topic of the interpretation of working time legislation – more specifically on possible impacts of the recent ‘Matzak’ judgment of the European Court of Justice (CJEU) of February 21 2018 which had ruled that, under EU law, stand-by time of a worker at home who is obliged to respond to calls from the employer within a short period must be regarded as 'working time'.