Following the 2008 coup d'état, Guig was appointed secretary general by coup leader Mohamed Ould Abdel Aziz. In 2014, Guig was appointed Chairman of the Commission of the African Union to supervise the 2014 Egyptian presidential election, which resulted in the election of former General Abdel Fattah el-Sisi. On January 9, 2015, Guig was appointed State Inspector General and pledged to fight against mismanagement and misappropriation of public property. In June 2015 however, Guig was appointed Deputy General Secretary of the Arab League to manage financial affairs.