Where the situations fall within the exceptions provided under Article 4 of the Administrative Regulation No. 17/2004 of the Macao SARG, non-Macao residents may take up occasional work of instructive, technical, quality controlling, business auditing in nature, or engage in religious, sports, academic, cultural and artistic exchange activities, continuously or intermittently for not more than 45 days during their half-year stay in Macao. Notwithstanding these exceptional circumstances, all non-Macao residents are required in general to have obtained from Macao authority a permission to work before commencing to work and the application for permission to work should be made to the Human Resources Office by Macao-registered companies engaging the foreign workers. Please refer to Employment in Macao.