He is definetly on Sharif Hassan payroll, he is getting paid by the corrupt Sharif Hassan.

The United Nations envoy for Somalia Amb. Augustine Mahiga, has today made a surprise visit in Somalia’s capital, Mogadishu amid scuffles are growing in the country’s Transitional Federal Parliament.
The UN’s Secretary-General Special Representative for Somalia, Augustine P. Mahiga with a high delegation jetted at the International airport in Mogadishu late on Tuesday afternoon and held short-lived talks with Somali parliament speaker Sharif Hassan Sheik aden over the country’s ongoing political crises.
Mr. Mahiga and speaker Sharif Hassan have had a door-closed discussion at Halne centre, the main military base for African union peacekeepers in Somalia known as (AMISOM).
The arrival of United Nations envoy for Somalia, Augustine Mahiga in Mogadishu, was unexpected, unprecedented and Rather different from his prior visits in Somalia because he did not meet any government officials as the president Sheik Sharif Ahmed and prime minister Abdiweli Mohamed Ali.