USS — U.S. Standard Gauge for bolt threads.

UL (Underwriters Laboratory) — A nationally recognized organization known for creating manufacturing standards for a wide range of products.    In the tradeshow industry UL worked with EDPA to establish a manufacturing standard for trade show exhibits known as UL2305.

U/W — Underwriter.

Ultraviolet Lamp — A source of ultraviolet light used with phosphorescent and fluorescent paints.

Union — An organization of workers formed for mutual benefit and for the purpose of dealing collectively with their employer in wages, hours, working conditions, and other matters pertaining to their employment.

Union Contract — Written agreement between an employer and a union specifying the terms and conditions of employment for workers. Also known as COLLECTIVE BARGAINING AGREEMENT.

Union Jurisdiction —The jobs that may be performed by a specific labor union. SEE JURISDICTION.

Union Official — Representative of a union either selected or elected to conduct the affairs of the union.

Union Referral — Method of hiring in which the union refers job applicants to the employer. Differs from central hiring hall in that there is no fixed location at which applicants gather.

Union Steward — On-site union official; union official who will represent the union workers in relation to the terms of the agreements.

Upright — Metal support for drapes. See POST.

Upson Board — Fiberboard of varying thickness, used as the surface for visual enhancement such as paint or decoration.

Useage — Temporary storage area for excess furniture, carpet and equipment. Typically used by general service contractor on show site.