Isn't job sharing where one job / salary is performed by 2 people ?
My wife returned to work after maternity on a part-time basis (3 days a week when previously full-time). Her work colleague went on maternity soon after and returned to work (2 days part-time when previously full-time) a good few months after my wife. After 2 years working like this, today someone from HR described them as 'job sharing' (whilst trying to get them to change hours / cover other days).
My understanding is job-sharing suggests there is only one job position but it is being fulfilled by two people. There was always 2 jobs i.e. one each (well plus the other person in the department who is being moved out) so if they are now describing their jobs as a job-share position hasn't one position redundant ?
Why does this matter…well things are getting messy there and redundancy might be attractive.