The department is a constitutionally mandated department of the AFL-CIO. The department's offices are located at the AFL-CIO headquarters in Washington, D.C. The department has many state and local councils and committees, and works closely with AFL-CIO state and local labor bodies to carry out its functions. The ULS&TD primary function is to promote the union label. These emblems demonstrate that the employees who make the product or provide the service are union workers, and that they are treated fairly by their employers. The ULS&TD also coordinates national boycotts that have been endorsed by the AFL-CIO executive council. The department maintains and publishes the "Do Not Buy" list of companies being boycotted and the products and services involved. The ""Label Letter"" publication is the most visible means the department uses to publicize boycott updates. The "Label Letter" features special interest stories, alerts, a "Do Buy" section, and other information of interest. Member unions of the AFL-CIO and their local affiliates often reproduce sections and articles of the newsletter to spreading the "union label message" to union members and their families. One of the more widely known activities of the department is the annual AFL-CIO Union-Industries Show. Held in a different city each year, the show is a cooperative effort of unions and the companies with which they have contracts. Unions and employers exhibit union-made and American-made products and services. Free to the public, the event often draws large crowds. ULS&TD also exclusively endorses the "Shop Union Made" website as an "official" Internet shopping site for union-made products and services. Naming conventions in Ethiopia and Eritrea  The naming convention used in Eritrea and Ethiopia does not have family names and typically consists of an individual personal name and a separate patronymic. This is similar to Arabic, Icelandic, and Somali naming conventions. Traditionally for the Habesha peoples (Eritrean-Ethiopians), the lineage is traced paternally; legislation has been passed in Eritrea that allows for this to be done on the maternal side as well. In this convention, children are given a name at birth, by which name they will be known. To differentiate from others in the same generation with the same name, their father's first name and sometimes grandfather's first name is added. This may continue "ad infinitum". Outside Ethiopia, this is often mistaken for a surname or middle name but unlike European names, different generations do not have the same second or third names.