In cases of request on grounds of threat or health, the Central Government will have the genuineness of the request assessed by an Independent Central agency or by a group of at least two independent experts.
Rules about posting and minimum tenure of IAS officers
In case of a State cadre, all appointments to the cadre posts are done by the concerned State Government.
A cadre officer can hold the minimum prescribed tenure, except in the event of promotion, retirement, deputation outside the State or training exceeding two months.
A cadre officer may be transferred before the minimum tenure only on the recommendation of a Committee on Minimum Tenure.