Repeatedly, a member of staff has ignored some of the expectations laid out in his job description. His line manager has held meetings with him and set out a structure for when such tasks should be completed. However, this has not been successful and has actually ended up with the staff member deliberately doing other tasks that are not part of his role and could potentially pose a building's safety risk. Should this now be passed up to the Headteacher to intervene, or is there a different process? Thanks!