Sabbatical leave are long leaves. One year, two years, three years. After taking Sabbatical leave one can rejoin parent organization. These leaves are given to pursue hobbies, do courses, do business etc.
Sabbatical leave facilities are there in some government sectors.
Senior IAS officers are requested to encourage Sabbatical leaves and promote art, culture, teaching. Encouragement can be given by making Sabbatical leave a paid leave to some extent.
Put up for consideration of GOI. And a favorable consideration.