OEE vs. OLE vs. TEEP: Understanding Manufacturing Metrics

Introduction

In modern manufacturing, managers are often inundated with abbreviations: OEE, OLE, TEEP, NEE, and more. While they all measure efficiency, they look at production through different lenses.

Understanding the difference between OEE (Overall Equipment Effectiveness), OLE (Overall Labor Effectiveness), and TEEP (Total Effective Equipment Performance) is crucial for building a complete picture of factory productivity.

1. OEE: Overall Equipment Effectiveness

OEE measures the productivity of a specific machine or production line during its scheduled operating time.

• Key Focus: Equipment efficiency.
• Base Time: Planned Production Time (excludes scheduled downtime like weekends, holidays, or planned shut-downs).
• Formula: Availability × Performance × Quality

2. TEEP: Total Effective Equipment Performance

TEEP measures the productivity of a specific machine over calendar time (24 hours a day, 365 days a year).

• Key Focus: Plant capacity utilization.
• Base Time: Calendar Time (24/7/365).
• Formula: Utilization × OEE
• Where Utilization is: Planned Production Time / Total Calendar Time
• Why it matters: TEEP tells you how much product you could make if you ran your machines non-stop, helping you decide whether to buy new machinery or simply add another shift.

3. OLE: Overall Labor Effectiveness

While OEE and TEEP focus on machines, OLE measures the productivity of the workforce operating that machinery.

• Key Focus: Workforce performance.
• Formula: Labor Utilization × Labor Performance × Labor Quality
• Where:
  • Labor Utilization: Time spent working on production lines vs. total logged time.
  • Labor Performance: Parts produced by workforce vs. standard labor run-rate.
  • Labor Quality: Good parts produced vs. total parts produced by labor group.
• Why it matters: A machine might have high OEE, but if it takes three times as many operators to run it as standard because of training gaps, OLE will highlight the inefficiency.

OEE vs. TEEP: A Visual Example

Suppose your plant runs a machine 8 hours a day, 5 days a week (40 hours total). The total calendar time is 168 hours (24/7).

If the OEE of the machine during those 40 hours is 80%:

• Your OEE is 80% (you did well during scheduled hours).
• Your TEEP is 19.0% ((40 hours / 168 hours) × 80%).

This indicates that while the machine is running efficiently when scheduled, it is sitting idle 76% of the calendar week.

Conclusion

Use OEE to optimize daily equipment productivity. Use TEEP to make strategic capital investments and capacity scheduling decisions. Use OLE to evaluate your training programs, operator staffing, and workforce scheduling.