(BBC News) Bosses have been urged not to indulge in invasive surveillance by reading their employees' private messages.
A series of groups spoke out after Europe's top court ruled a Romanian man whose employer read his messages had not had his rights violated.
He broke company policy by using a work account to talk to his family.
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In response, bodies representing directors and workers, as well as privacy and human resources groups, all issued similar warnings to bosses.