This is a legacy version of the WELL Building Standard. Please check the latest version here.

Low-glare workstation design

Glare is commonly generated when high-intensity electric or natural light reflects off glossy surfaces that may be positioned at suboptimal angles in and around occupant spaces, in relation to windows. The resulting discomfort can be a hindrance to an otherwise comfortable and effective work environment. Adjusting the angle at which the light hits a surface can help guide the light away from reflecting directly into the eye, thereby avoiding glare.

This feature seeks to minimize glare and high luminance contrast between computer screens and the surrounding background through consideration of the spatial orientation of occupant spaces.

Part 1: Glare Avoidance

The following requirements are met:

a.81 To minimize glare caused by incoming sunlight, all computer screens for at desks located within 4.5 m [15 ft] of view windows can be oriented within a 20° angle perpendicular to the plane of the nearest window.
b. Overhead luminaires are not aimed directly at computer screens.

Applicability Matrix

Core & Shell New & Existing Buildings New & Existing Interiors
Part 1: Glare Avoidance - O O
Commercial Kitchen Education Multifamily Residential Restaurant Retail
Part 1: Glare Avoidance - O - - -

Verification Methods Matrix

Letters of Assurance Annotated Documents On-Site Checks
Part 1: Glare Avoidance Visual Inspection

Ontario Ministry of Labour. Computer Ergonomics: Workstation Layout and Lighting. Toronto: Ontario Ministry of Labour; September 2004: 16.


The Ontario Ministry of Labour's "Computer Ergonomics: Workstations and Lighting" recommends that worker's line of sight is parallel to the plane of windows.