He served as Grand Steward of the Imperial Household Agency from 1 April 2005 to 1 June 2012.
Appointed by Prime Minister Junichirō Koizumi, promoter of absolute primogeniture, Haketa is known as a supporter of the report submitted by the Advisory Council on Imperial Household Act [ja], recommending absolute primogeniture.
[1] He criticized Prince Tomohito of Mikasa for his comment that agnatic primogeniture should be kept, and requested the members of the Imperial House to refrain from expressing their opinion on the succession.
Among his senior workers at the Ministry of Health is Teijiro Furukawa [ja], a member of the Advisory Council on the Imperial Household Law.
Haketa announced his retirement effective 1 June 2012, and was replaced by Noriyuki Kazaoka.