Author Bio ▼

Andrew Sharman

Andrew is the CEO of RMS Switzerland, a global consultancy specialising in safety behaviour, culture and leadership. With offices in the UK, and Switzerland.  RMS has an enviable track record of improving culture and enabling excellence for NGOs and blue chip organisations around the world through industry sectors including aviation, automotive, mining, construction, oil and gas, pharmaceuticals, and FMCGs. Find out more at www.RMSswitzerland.com

Andrew is also Professor of Leadership & Safety Culture at the European Centre for Executive Development in Fontainebleau, France, and Professor of Risk Management at the University of Zurich, Switzerland.  He is a Chartered Fellow and Vice President of the Institution of Occupational Safety & Health (IOSH); a Fellow of the International Institute of Risk and Safety Management; and a Fellow of the Institute of Leadership & Management.

Far from being risk-averse, he loves adventure sports including climbing, free flying, sea kayaking and swimming with sharks. He uses these pursuits to re-energise the language, perceptions and functions of safety and risk management and align the disciplines with broader organisational issues driving positive impact and enhancing the performance of individuals, teams and businesses.

Read Andrew’s New Rules of Safety series on SHP here.

Andrew’s book From Accidents to Zero is one of the fastest-selling books on safety culture of the 21st  century, find out more at www.fromaccidentstozero.com and enter code SHP 25 to receive an exclusive 25% discount for SHPonline readers.

August 2, 2019

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New Rules of Safety

The New Rules of Safety: Be careful what you measure

Professor Andrew Sharman offers caution on the desire to set hard measures to quantify the behaviour of workers and suggests that if we’re not careful, we might just get what we measure.

EHS 2018 - Andrew Sharman

Hawthorne, a suburb of Chicago, USA in the 1920s. Australian sociologist Elton Mayo and his crew turned up to study the effect of the physical work environment on employee productivity.

Day after day the lighting in the workplace is gradually increased and the research team observe dutifully. As anticipated, the productivity of workers is measured to have improved. The scientists continue their experiment, meticulously recording each tiny adjustment to light, and the concurrent boost in productivity. Brilliant news: now, just by increasing workplace lighting businesses around the world could maximize productivity. It must have been an exciting conclusion!

However, just days after the scientists left the factory, the management team noted that the productivity of the workers quickly fell back to previous levels, despite the increased lighting.

Returning to rethink their hypotheses, the scientists advanced that productivity increased not due to the changes in the work environment, but because of the attention levied on the workers by the research team. The ‘Hawthorne Effect’ as it has become known, refers to the tendency of some people to work harder and perform better when they are aware that they are being observed.  Individuals appear to change their behaviors as a direct result of the attention they receive.

Be careful what you measure 1

Is it really this simple? Mayo himself felt there must be more to it. The research team returned to Western Electric in the 1930s and became fascinated by the informal employee groups that seemed to form within the formal structure of the company. By exploring the beliefs and creeds which make individuals feel part of an integrated group Mayo concluded that beyond the power of observation was the importance of group dynamics:

“The desire to stand well with one’s fellows, the so-called human instinct of association, easily outweighs the merely individual interest and the logic of reasoning upon which so many spurious principles of management are based.”

The Hawthorne studies provide three key learnings for those interested in improving safety at work:

  1. An overt attachment to data analytics can lead us to focus too narrowly on what is measurable or quantifiable, and we essentially get what we measure.
  2. A sense of team spirit – based on unwritten codes of conduct within the group formed by and within themselves – influences the output of individual workers. Whilst the work environment may be important for comfort and wellbeing, the desire for groups to be seen to be efficient and effective may be a greater motivator.
  3. The act of observation in itself has the power to influence human behaviour. Human beings usually to want to be observed, quite literally, in ‘the best light’. 

The New Rule of Safety #25: Be careful what you measure

Be careful what you measure

It’s vital to provide clarity around what you expect in terms of workplace safety, yet whilst it may be tempting to want to record everything in numerical terms, some of our expectations – especially those related to worker behaviour – may not be quite so easy to quantify.

Think about the process of observing workers in your organisation. Are your workers acting so as to be seen in ‘the best light’? What happens when the light stops shining on them? Does their behaviour change like the workers at Hawthorne?

Read more of Andrew’s New Rules of Safety, here.


Professor Andrew Sharman is a consultant to leaders at Apple, BMW, Burberry, IKEA, Heineken, Jaguar Land Rover, Mercedes Benz, Tata, and more, and the co-creator of the world’s only IOSH certificate in Behavioural Safety Leadership, find out more here. Email [email protected] and quote SHP25 to get 25% off your course.

In From Accidents to Zero – the world’s best-selling book on safety culture – Sharman shares more than 80 questions that help leaders drive strategic safety improvement, improve culture and enable excellence. Get your copy of the book with an exclusive 25% discount by using the code SHP25 at www.fromaccidentstozero.com to order your copy now.

SHP legislation update eBook

SHP’s latest legislation eBook covers recognition of mental health issues in the workplace, the reclassification of mild welding fume as a human carcinogen, new manslaughter definitive guidelines, PPE, Brexit, drone safety regulations and much more…

  • Recognition of Mental Health Issues in the Workplace
  • Reclassification of Mild Welding Fume as a Human Carcinogen
  • Sentencing Council Published New Manslaughter Definitive Guidelines
  • Larger firms face biggest fine increases: Sentencing Council impact assessment shows
  • Bouncy Castles and Other Play Inflatables: Safety Advice
  • Revision of Standards for Powered Doors, Gates and Barriers
  • PPE
  • Modern Slavery Act Review
  • Drone Safety Regulations
  • Health and Safety (Amendment) (EU Exit) Regulations 2018
  • Ionising Radiation
  • Safety, Health and Welfare at Work (Diving) Regulations 2018 (Ireland)
  • Environment and Energy
  • and much more…

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Nigel Evelyn-Dupree
Nigel Evelyn-Dupree

Mmmm, subjective or objective measure of before and after allowing for the sub-optimal conditions in the first like, you know, a chicken and egg conundrum, are they broken at the beginning of the experiment or not, are the “given conditions” responsible for their presenteeism and lost productivity and are you measuring “recovered performance” or “enhanced performance” that just maybe sustainable and optimal or just conserving the existing mediocre? 20% or 30 days out of the 52.7 lost productivity the ONS has classified as presenteeism already subjectively measured by the HSE Better Display Screen RR 561 2007 medical review concluding 58%… Read more »

Nigel Evelyn-Dupree
Nigel Evelyn-Dupree

Excellent article and well worth revisiting just, understanding everyone is working toward being “future-proof” this still leaves some well known unmitigated risks on the back-burner like 58% of DSE operators suffering presenteeism and debilitating visual repetitive stress injuries increasing overall risk of errors, mishaps and fatigue related accidents. Eye-strain, CVS or Screen Fatigue resulting in binocular 3D vision loss however, is not just an acquired or induced injury in the workplace but, an age diverse Global Pandemic & visual health burden (WHO ICD-10) as, 50% more children are presenting with myopic and asthenopic disease leaving, 19% of teenagers in education… Read more »