If she was employed for 10 years on a rolling type of contract, then her employer may have been acting illegally. Uder the current legislation, she must be given a contract of indefinate duration, i.e. a permanent contract after 4 yrs.She should contact her union urgently and provide fullest details of the contracts she has fulfilled since her appointment. From what you have described above, there may be serious issues to be addressed, not least the actual cost of purchasing service, and the question of eligibility for permanency.