# Subordinate

**URL:** https://kaizumi.com/dictionary/subordinate

**Description:** Subordinate is the third of TOC's Five Focusing Steps—aligning all non-constraint resources to support and never impede constraint performance.

**Category:** toc

**Tags:** flow, foundational

## Definition

Subordinate is the third step in TOC's Five Focusing Steps—aligning everything else in the system to support the constraint. Non-constraints have excess capacity by definition; the question is how to use that excess to maximize constraint performance. Subordination means scheduling non-constraints to maintain constraint buffers, not optimizing non-constraint efficiency at the expense of constraint throughput, and changing policies that hinder constraint performance. The system serves the constraint, not the other way around.

## Examples

### Manufacturing

> Non-constraint operations were measured on individual efficiency, causing them to build inventory regardless of constraint needs. Subordination: changed metrics from local efficiency to buffer health; scheduled upstream work to maintain 2-day buffer at constraint; allowed non-constraints to idle when buffer was full.

### Healthcare

> Patient transport operated independently, sometimes making patients wait in hallways. Subordination: transport schedule aligned to procedure room (constraint) needs; transporters became dedicated to constraint support; waiting time at procedure rooms dropped to near zero.

### Administrative

> Support staff had their own task priorities. Subordination: redefined priority as "whatever the constraint needs next"; intake staff ensured files were complete before reaching constraint (underwriting); constraint never waited for information.

## Key Points

- Third of Five Focusing Steps—follows Exploit
- Non-constraints align to serve the constraint, not optimize locally
- May require changing metrics, schedules, and policies
- Non-constraint idle time is acceptable if constraint is protected

## Common Misconceptions

**Subordinate means slowing down non-constraints.** Subordination means aligning non-constraint behavior—which might mean speeding up, building buffers, or changing priorities. The goal is constraint support, not universal slowdown.

**Local inefficiency is waste.** In TOC, non-constraint efficiency that doesn't support the constraint is meaningless. A non-constraint building excess inventory is actually harming the system even if it looks "efficient" locally.

## Related Tool

Chart each station's work content against takt time to rebalance non-constraint operations so they support rather than overload the constraint — try the [Yamazumi chart builder](/tools/yamazumi).

Source: https://kaizumi.com/dictionary/subordinate
Licence: free to quote and cite with attribution to Kaizumi.