What a Pair of Glasses Taught Us About Worker Wellbeing

Shows how vision correction can improve worker productivity and wellbeing.

Published by

Good Business Labs

Year

2026

Format

Link

Context

Nearly 6% higher productivity was recorded among garment workers who received corrective glasses in a randomised controlled trial across three factories in Karnataka. This case study examines how addressing presbyopia, an age-related loss of near vision, can improve worker productivity while supporting wellbeing. It covers the trial design, adherence support and productivity measurement approach, and highlights a 3x return on investment over three months. The study also demonstrates the potential for workplace health interventions to deliver measurable business benefits.

Key takeaways

Understand how vision correction can improve productivity among garment workers.
Explore how supervisor support can strengthen adherence to workplace health interventions.
Learn how low-cost health interventions can generate measurable business returns.
Consider vision correction as a workplace health and gender equity intervention.