Investigating the Work Practices of Assembly Line Workers with Visual Impairments
Mei-Lian Vader, Marjory Pineda, Ravi Kuber · 2025 · Proceedings of the 22nd International Web for All Conference (W4A) · doi:10.1145/3744257.3744259
Summary
This paper investigates the work practices and experiences of assembly line workers with visual impairments at Blind Industries and Services of Maryland (BISM), an organization that provides training and employment to individuals with visual impairments across North America. The study focused on a garment construction assembly line producing Army Physical Fitness Uniform (APFU) jackets for military contracts, operated by a mixed workforce of sighted and visually-impaired associates using commercial sewing machines. The research employed a multi-phased qualitative approach: three observational studies of the assembly line floor (approximately 60 minutes each at different times of day) followed by semi-structured interviews with four participants — three fully blind assembly line workers with 6-23 years of experience and one sighted manager of training and accessibility with 14 years of experience. The assembly line floor was divided into three sections (inner sleeve, outer sleeve, and combination/closing) with workstations in parallel rows, where each station handled a specific task before handing off to the next. The study examined four key areas: work environment layout and organization, productivity and task management, education and training methods, and workstation modifications. The researchers used deductive coding with comparison analysis to identify common themes across observations and interviews.
Key findings
The study revealed several critical practices enabling successful mixed-ability assembly line work. Workers developed specific placement orientations for fabric pieces at handoff points, placing pieces with a specific side facing upward at a specific angle so the next worker could efficiently pick up the fabric. Low-tech tactile modifications to workstations proved essential — guides made from electrical tape, Dymo tape, metal pieces, magnets, and 3D-printed objects were bolted to sewing machines to provide directional feedback for sewing straight lines. These were customized based on individual needs, with thicker tape for some workers. Notches cut into fabric pieces served as tactile landmarks for alignment and orientation, benefiting both sighted and visually-impaired workers. Training followed a blind-perspective approach: all new associates, regardless of vision level, were encouraged to learn using a blindfold, relying on touch using hand-over-hand and hand-under-hand techniques taught by a visually-impaired trainer. This non-visual training approach built confidence and taught skills transferable to all associates. The expected output was 300 jackets per day. Interestingly, one participant noted that visually-impaired workers had fewer injuries than sighted workers, attributing this to sighted workers being distracted by visual stimuli while visually-impaired workers constantly monitored through touch. A hesitancy toward promotion was observed among visually-impaired workers who perceived leadership roles as out of reach.
Relevance
This research makes a valuable contribution to the underexplored area of workplace accessibility in manufacturing and manual labor settings, countering assumptions that assembly line work necessarily requires visual ability. The findings demonstrate that with appropriate low-tech accommodations, non-visual training methods, and collaborative mixed-ability team structures, workers with visual impairments can perform precision manufacturing tasks successfully. For accessibility practitioners and employers, the study provides practical, replicable strategies: tactile guides on equipment, standardized handoff orientations, fabric notching for non-visual alignment, and blind-perspective training for all workers. The emphasis on low-tech, iterative, and customizable solutions is particularly instructive — these accommodations are inexpensive, easily modified, and transferable between machines and workers. The finding about self-advocacy challenges and perceived promotion barriers highlights that workplace accessibility extends beyond task completion to include career advancement and organizational culture.
Tags: workplace accessibility · visual impairment · employment · low-tech accessibility · tactile feedback · manufacturing · blind workers
Standards referenced: Americans with Disabilities Act