IOSH Measuring Performance 1 — Questions and Answers
Question 1: What is a 'leading indicator' in health and safety performance measurement?
- An indicator that shows past performance
- A proactive measure that monitors activities and conditions before incidents occur, such as training completion rates or inspection findings (Correct answer)
- An indicator that measures the financial cost of accidents
- An indicator based only on accident statistics
Correct answer: A proactive measure that monitors activities and conditions before incidents occur, such as training completion rates or inspection findings
Leading indicators are proactive measures that monitor safety inputs and processes before incidents occur. Examples include: percentage of risk assessments completed, training compliance rates, safety inspection scores, near-miss reporting rates, and safety observation results.
Question 2: What is a 'lagging indicator' in health and safety performance measurement?
- An indicator that measures future safety performance
- A reactive measure based on outcomes such as accident rates, lost-time injuries, occupational illness rates and enforcement actions (Correct answer)
- An indicator that is always slow to produce results
- An indicator used only by the HSE
Correct answer: A reactive measure based on outcomes such as accident rates, lost-time injuries, occupational illness rates and enforcement actions
Lagging indicators are reactive measures based on past events and outcomes. Examples include: number of accidents, lost-time injury frequency rate, RIDDOR-reportable incidents, days lost to injury/illness, compensation claims, and enforcement notices received.
Question 3: What is the purpose of a workplace safety audit?
- To replace the need for risk assessments
- To systematically evaluate whether the health and safety management system is achieving its objectives and complying with standards (Correct answer)
- To prepare for an HSE inspection
- To check that workers are wearing PPE
Correct answer: To systematically evaluate whether the health and safety management system is achieving its objectives and complying with standards
A safety audit is a systematic, independent examination of the health and safety management system to determine whether policies, procedures and practices are adequate, being implemented, and achieving their objectives. It covers the whole management system, not just physical conditions.
Question 4: What is the difference between a safety 'inspection' and a safety 'audit'?
- There is no difference
- An inspection examines physical workplace conditions; an audit evaluates the management system, policies and procedures (Correct answer)
- An audit is a shorter process; an inspection takes longer
- Inspections are legal requirements; audits are voluntary
Correct answer: An inspection examines physical workplace conditions; an audit evaluates the management system, policies and procedures
An inspection focuses on the physical conditions of the workplace — identifying hazards, checking equipment, verifying controls are in place. An audit is a broader, systematic evaluation of the entire health and safety management system — policies, procedures, training, records, and compliance.
Question 5: What is a 'Lost Time Injury Frequency Rate' (LTIFR)?
- The number of injuries per employee
- The number of lost-time injuries per 1,000,000 hours worked, used to benchmark safety performance (Correct answer)
- The total number of days lost to injury
- The average number of injuries per month
Correct answer: The number of lost-time injuries per 1,000,000 hours worked, used to benchmark safety performance
LTIFR = (number of lost-time injuries × 1,000,000) ÷ total hours worked. It standardises injury data to allow meaningful comparison between organisations of different sizes and between different time periods. It is one of the most widely used lagging indicators.
Question 6: Why is it important to use both leading and lagging indicators?
- Lagging indicators are sufficient on their own
- Leading indicators measure prevention efforts while lagging indicators measure outcomes — together they give a complete picture of safety performance (Correct answer)
- Leading indicators are too expensive to measure
- Only lagging indicators are recognised by the HSE
Correct answer: Leading indicators measure prevention efforts while lagging indicators measure outcomes — together they give a complete picture of safety performance
Using both types provides a balanced view. Lagging indicators show whether harm is occurring (outcomes), while leading indicators show whether preventive measures are working (process). Relying solely on lagging indicators means you only learn from failures, not from what's working well.
IOSH Measuring Performance 1
What is a 'leading indicator' in health and safety performance measurement?