Which statement best describes the role of the sustain element of 5S?

• A. Sort.
• B. Set in order.
• C. Sustain—the ongoing discipline to maintain standards.
• D. Shine.

Answer: (C)

The sustain element is about keeping the gains from 5S over time through ongoing discipline and routines. It focuses on making the improved cleanliness, organization, and standardized practices a normal, maintained part of daily work rather than a one-off effort. Without sustain, the habits and standards tend to drift, and the workplace can revert to old ways.

Think of it as the ongoing effort that locks in the changes: regular audits or checks, visual controls that are consistently followed, training to reinforce standards, and leadership support that keeps 5S reminders and accountability in place. This is why describing sustain as the ongoing discipline to maintain standards best captures its role.

The other steps—sorting to remove what isn’t needed, setting in order to organize the workspace, and shining to keep things clean—are essential foundations, but sustain ensures those foundations are not temporary. It keeps the standards in place day after day, so the improvements endure.