The ConCA framework for understanding accident causation and preventing construction accidents
Submitting Institution
Loughborough UniversityUnit of Assessment
Architecture, Built Environment and PlanningSummary Impact Type
TechnologicalResearch Subject Area(s)
Medical and Health Sciences: Public Health and Health Services
Summary of the impact
Loughborough University's Construction Accident Causality (ConCA)
framework has:
- Significantly contributed to the Health and Safety Executive's (HSE)
programme towards major
improvements in construction health and safety over a 10-year period;
- Influenced the direction of the Donaghy Inquiry into fatal accidents
and its implementation;
- Underpinned the framework for evaluating the underlying human and
organisational factors for
the Olympic Delivery Authority's exemplary health and safety record for
London 2012.
- Helped in the development by HSE of a new approach to
construction-accident investigations;
- Guided Toyota Australia in an investigation of a construction
fatality; and,
- Shaped the work of an HSE-industry-trades-union working party on
dealing with the risk of
catastrophic construction incidents.
Underpinning research
In the UK, construction kills and injures more people than any other
industry. The causes of
accidents are numerous and combine in complex patterns. Many accidents go
unreported and few
construction companies are sufficiently equipped to investigate and learn
from accidents. The
Health and Safety Executive (HSE) approach to construction accidents is
dictated as much by its
duty in law enforcement as to improving health and safety.
Until 2000, researchers of construction accident causes mainly focussed
on accident frequency
and patterns of incidence. When, rarely, they analysed accident data more
deeply, they
concentrated on the immediate accident circumstances, neglecting indirect
underlying influences
more remote from the accident location.
Loughborough University's ConCA was the first readily applied framework
to redress the balance
in our understanding of what causes construction accidents between the
indirect (distal) and direct
(proximal) causes and, at the same time, accord due weight to the
complexity of construction-accident
causation, with interlinked factors operating simultaneously at different
levels of the
hierarchy. Understanding what really causes accidents is the first major
step towards preventing
them in the future. Loughborough University's interdisciplinary project
(ConCA) began in 1999 to
gather rich data on 100 construction accidents with sensitivity to an
exceptionally broad range of
causal factors. The researchers won HSE funding from HSE's 1998-99
Competition for Ideas.
A trio of researchers led the project — Alistair Gibb, then a senior
lecturer (now Professor) in the
Department of Civil and Building Engineering (DCBE) (93 to date); Roger
Haslam, lecturer (now
Professor) in the Department of Human Sciences (DHS) (92 to date, now in
Design School); and
Diane Gyi, research development fellow (now Reader) in the Department of
Design and
Technology (93 to date). Research student Hide (DCBE 99-03) developed the
research methods,
collected data and made a detailed analysis of 40 of the 100 accidents,
obtaining her PhD in 2003.
Loughborough University research assistants Pavitt (DCBE 98-04) and
Atkinson (DHS 99-01)
collected and analysed data for the remaining 60 accidents.
Through their analysis, the team devised a hierarchical model of
construction-accident causality
distinguishing originating influences, shaping factors and immediate
accident circumstances. For
each of these, represented as layers in the model, they identified the
types of causal factor typical
of construction accidents [R1, R2, R3, R4].
With the ConCA model in place, the team were able to identify and
highlight specific causal chains
of concern away from the immediate circumstances and make corresponding
recommendations to
the industry such that, by applying these more accidents would be
prevented. The HSE published
the findings in report RR156 [R2]. The researchers have published
succinct accounts of their
model and its implications in academic literature [R3] and
publications read by practitioners [R1].
In 2009, Gibb led a team including DCBE research associates Pendlebury
2000-2009, Bust (2003
to date) and Brace (DHS, 2003 - 2006) in a review of international
research on the causes of fatal
construction accidents for an inquiry commissioned by the Secretary of
State for Work and
Pensions into the underlying causes of fatal construction accidents
(`Donaghy inquiry'). The team
based its approach on the ConCA model. The HSE published the team's
findings [R5]. In 2010,
Gibb used the ConCA model as the foundation for an HSE-funded
investigation of the risk of
catastrophic incidents in construction. The HSE published the findings in
its Research Report
series in 2011 [R6]. Two colleagues formed part of Gibb's team -
senior lecturer Lee Bosher
(DCBE 05 to date) and research assistant Kappia (DCBE, 2008-10).
Gilbertson of the Construction
Industry Research and Information Association (CIRIA) was an industrial
collaborator.
References to the research
R1 Gibb, A., Haslam, R., Gyi, D., Hide, S. and Duff, A. (2006)
"What causes accidents?",
Proceedings of the Institution of Civil Engineers - Civil Engineering,
159(6), 46-50, DOI.
10.1680/cien.2006.159.6.46, ISSN 0965 089 X http://hdl.handle.net/2134/5729
(Top peer-reviewed
Civil Engineering Journal maximising impact as delivered FOC to every
chartered
Civil Engineer) (won the Institution of Civil Engineer's Safety in
Construction Medal for 2007.
See Proc Institution of Civil Engineers, August 2007, 160(3), p.
109 DOI:
10.1680/cien.2007.160.3.104)
[impact factor 0.125, 16 citations]
R2 Hide, S., Atkinson, S., Pavitt, T., Haslam, R., Gibb, A., Gyi,
D., Duff, R. and Suraji, A. (2003)
"Causal factors in construction accidents", HSE Research Report RR 156,
ISBN 07176 2749
7, (www.hse.gov.uk/research/rrpdf/rr156.pdf)
[11 citations, research undertaken wholly by
Loughborough University, with UMIST acting purely as advisor]
R3 Haslam, R., Hide, S., Gibb, A., Gyi, D., Pavitt, T., Atkinson,
S. and Duff, A. (2005)
"Contributing factors in construction accidents", Applied Ergonomics,
36(4): 401-415. DOI:
10.1016/j.apergo.2004.12.002
(Invited paper, special edition on ergonomics in building and
construction — 2nd most downloaded paper via Science Direct from Applied
Ergonomics in
2005 for all previous years) [impact factor 1.428, 143 citations]
R4 Gibb, A., Hide, S., Haslam, R., Gyi, D., Pavitt, T., Atkinson,
S. and Duff, A. (2005)
"Construction tools and equipment - their influence on accident
causality", Journal of
Engineering, Design and Technology, 3(1): 12-23. DOI: 10.1108/17260530510815303
(Published in a peer-reviewed journal) [SCImago Journal Rank 0.251, 8
citations]
R5 Brace, C., Gibb, A.G.F., Pendlebury, M. & Bust, P.D.
(2009), "Health & Safety in the
Construction Industry: Underlying causes in construction fatal accidents —
External research",
Health and Safety Executive, HSE Report, 205 pp,
www.hse.gov.uk/construction/resources/phase2ext.pdf
R6 Gilbertson, A., Kappia, J., Bosher, L. & Gibb, A.G.F.,
(2011) "Preventing catastrophic events
in construction", HSE Research Report RR834, Health & Safety
Executive, HSE Books,
220pp, http://www.hse.gov.uk/research/rrhtm/rr834.htm
Grants/funding awarded
G1 Gibb & Haslam; London 2012: Preconditioning for Success
(Human & Organisational factors
evaluation); HSE; 2011-12; £99k
G2 Gibb & Cheyne; Olympic Park Safety and Communication
Initiatives; IOSH; 2011-12; £131k
G3 Gibb & Bosher; Catastrophic Events in Construction;
HSE (via CIRIA); 2009-10; £29k
G4 Gibb & Cheyne; London Olympics — Effectiveness of
H&S Interventions; IOSH; 2009-10; £5k
G5 Gibb; What Causes Construction Fatalities? (part of the
Donaghy Enquiry); HSE; 2009; £73k
G6 Gibb; Prevention through Design (2 contracts); NIOSH
(USA); 2008-10; £55k
G7 Gibb & Dainty; Migrant Workers — H&S Communication;
ConstructionSkills; 2008-09; £70k
G8 Gibb & Richardson; Older worker issues for H&S;
EPSRC (via IMCRC); 2007-09; £150k
G9 Gibb & Pasquire; Global worker issues for H&S
(2 projects); EPSRC (via IMCRC); 2004-07;
£114k
G10 Gibb; Project Excellence issues for H&S;
Association for Project Safety; 2004; £13k
G11 Gibb & Haslam; Offsite issues for H&S (HASPREST);
DETR/EPSRC IMI MCNS; 2001-04;
£200k
G12 Gibb & Haslam; Site and Personal factors in Accident
Causation in Construction; HSE; 1999-2002; £114k
Details of the impact
ConCA work has significantly improved the understanding of what really
causes construction
accidents, as a major step towards preventing their occurrence.
In 2001, the Health and Safety Executive (HSE) established a ten-year
work programme to make a
significant improvement to health and safety in construction owing to the
sector's poor health and
safety performance. HSE acknowledge that, from its publication in 2003,
the ConCA report RR156
was "particularly relevant to the establishment and development" of
this HSE programme, "leading
to a number of initiatives being taken forward to target specific
activities and risks". The ConCA
model's high-level similarity to an influence-network model that emerged
from other HSE-sponsored
research in particular gave HSE's Construction Division confidence to take
account of
all levels in the model hierarchies. Its synoptic sensibility has prompted
several initiatives targeting
specific risks; it persists today [C1, C2].
In 2009, the Loughborough University team's record led the HSE to
commission it to review
construction-safety research in order to inform the Donaghy `Fatals'
Inquiry, which the HSE was
supporting. As HSE note [C2], "On these occasions it is
important that those leading the enquiries
are furnished with appropriately robust data and analysis. Loughborough
University's work in
support of phase one of the enquiry provided a consolidated view of
previous work on causal
factors as a platform for later stages". Loughborough University
researchers influenced the inquiry
directly through one of two foundational reports published as part of the
inquiry. But more important
was an indirect influence through the lasting impact within HSE's
Construction Division of
Loughborough University's ConCA research. HFACS-C, the method of examining
the underlying
causes of fatal construction accidents adopted by Donaghy draws on ConCA,
notably for the
breadth of causal factors it recognizes [C3].
The current Secretary of State for Work and Pensions has said that "The
Government are
committed to addressing the heavy toll of deaths in the construction
industry which was highlighted
in Baroness Donaghy's report. We will therefore progress those of the
Donaghy recommendations
accepted by the previous Administration", including, for example,
simplification of pre-qualification
for small firms tendering for publicly-funded construction work [C4].
HFACS-C is a version of HFACS, an aviation accident-investigation
framework first applied to
construction accidents by the HSE in 2007. HSE's development and use of it
continues today.
HSE's Health and Safety Laboratory used it in a 2012 study, for example,
of good safety practice in
the putting up and taking down of temporary demountable structures (TDSs).
HSE commissioned
the research and published the resulting report [C5] in
anticipation of the high demand for TDSs
they knew would occur for the London 2012 Olympic and Paralympic Games.
The London 2012
Games have since been celebrated for their exceptionally good health and
safety record (zero
fatalities and an accident rate six times better than the industry
average).
In 2009, concerned about a perceived neglect by industry of the risk of
catastrophic construction
incidents, the HSE commissioned Gibb and Loughborough University
colleagues to extend their
causality work to examine this risk with the Construction Industry
Research and Information
Association (CIRIA) `with a view to challenging industry to address issues
which appeared to offer
the best chance for improvement in performance'. In parallel with
publication of the findings by
HSE in Research Report 834, April 2011 [R6], CIRIA published Guidance
on catastrophic events
in construction (CIRIA, http://bit.ly/1fld2SZ),
which supplemented material from RR834 [R6] with
material calculated to help practitioners respond practically to RR834.
Publication followed a series
of feature articles published in New Civil Engineer about the
catastrophe research, which helped
attract industry attention to this issue. Recommendations from
Loughborough University's
catastrophe work "are now being taken forward by a working group
established by the Construction
Industry Advisory Committee (CONIAC) — a tri-partite committee of HSE,
industry and trades
unions" [C2]. CONIAC advises HSE on protecting people from
construction-related health and
safety hazards.
The reach of ConCA has extended beyond both the construction industry and
the UK. For
example, after a fatality during construction of a new building in an
upgrade to its manufacturing
plant, Toyota Australia searched for a model that would best guide them
through a construction-
accident investigation, they consulted Royal Melbourne Institute of
Technology (RMIT) University
in Melbourne and were "advised that the ConCA accident causation
model... would be able to
assist [them] in [their] investigation". They "found
the model useful in exploring both direct and
indirect causes of the accident, thus allowing better insight into how
the accident occurred" [C6].
On the strength of their reputation, Gibb and Loughborough University
colleague Haslam (DHS),
with industry subcontractor Helen Bolt, were commissioned by the Olympic
Delivery Authority's
(ODA) to document the human and organisational contributions to the
exemplary construction
health and safety performance achieved by the ODA at London 2012. The
subsequent report
made publicly available on the ODA's Learning Legacy website, provides
examples to convey in
practical terms the key factors that contributed to the health and safety
achievement. Howard
Shiplee, the ODA's Construction Director commented, "of all the 2012
Legacy Learning documents
I really believe this to be the most significant for the future. May I
thank you... for doing such a
terrific job in setting out with credibility the significance of `soft'
individual and organisational issues
which can transform the construction industry". Furthermore, "`Preconditioning
for Success' is not
just a roadmap .... provides real guidance for those embarking on any
project or programme in the
future"[C7].
Sources to corroborate the impact
The following sources of corroboration can be made available at request.
C1 HSE 2010 Construction Intelligence Report — Analysis of
Construction Injury and Ill Health
Intelligence, http://s3.amazonaws.com/zanran_storage/www.hse.gov.uk/ContentPages/25543732.pdf
(Shows the persistence of the ConCA research)
C2 Letter `THE IMPACT OF RESEARCH ON HSE'S WORK' from Head of
Operations, North
West England, Field Operations Directorate, Construction Division, Health
and Safety
Executive (HSE). (States the influence of Loughborough University research
on HSE policy
and procedure - A copy of this letter, complete with signature, is
available)
C3 HSE Construction Division Phase 1 Report: Underlying causes
of construction fatal accidents
— A comprehensive review of recent work to consolidate and summarise
existing knowledge,
July 2009, Health and Safety Executive, HSE Report (shows ConCA was key in
the
development of the model developed by HSE for investigating fatal
accidents)
http://www.hse.gov.uk/construction/resources/phase1.pdf
C4 Written answer from Secretary of State for Work and Pensions to
question from Miss Begg on
`Industrial Accidents: Construction', Written Answers for 01-Dec-2010,
Hansard, Column 867W
(Further HSE work on London 2012 showing the impact of Loughborough
University's ConCA)
C5 Bell, J., Binch, S. and McCann, P. Identification of safety
good practice in the construction and
deconstruction of temporary demountable structures, 2012, Health and
Safety Laboratory
Report, 157 pp, (shows, despite the Government change, Loughborough
University's work is
still influencing change) http://www.hse.gov.uk/event-safety/demountable-structures.pdf
C6 Letter `Re Accident Causation Model' from National Occupational
Health and Safety Manager,
Toyota Motor Corporation Australia (Confirms that Loughborough
University's ConCA
framework was used in the analysis and to learn for the future following a
fatal accident - A
copy of this letter, complete with signature, is available)
C7 Olympic Delivery Authority Construction Director [Personal
email 2012 and public speech
2013] (ODA Director's acknowledgement of significance of Loughborough
University work in
learning from and driving legacy changes from London 2012)