The Professional category demands a high level of analytical and communication skills, substantive expertise and managerial leadership ability. Typically, these positions require the incumbent to make decisions after careful analysis and evaluation of problems involving discretionary choices between alternative courses of action. The incumbent also requires an understanding of an organized body of theoretical knowledge at a level equivalent to that represented by a university degree.
The functions in the General Service and related categories include administrative, secretarial and clerical support as well as specialized technical functions – for example, printing, security or building maintenance. The work carried out by General Service staff members is typically procedural, operational or technical in nature and ranges from routine duties to varied and complex assignments. Staff in the General Service and related categories are generally recruited locally at Headquarters, but could be of any nationality.