Katherine,
There are two reviews presented below. Of the meager research that
exists, the reviews don't really show much of an effect of long hours on
productivity/performance and if they do it is often positive.
1) Baltes, B.B., Briggs, T.E., Huff, J.W., Wright, J.A., and Neuman, G.A.
(1999)
Flexible and compressed workweek schedules: A meta-analysis of their
effects on work-related criteria.
Journal of Applied Psychology, 84 (4), 496-513.
2) Also, there's a 2003 review, titled "Working Long Hours", prepared by
the Health and Safety Laboratory, UK Government, that looks at many things
including performance. The link is below as well as the Table of
Contents:
http://www.hse.gov.uk/research/hsl_pdf/2003/hsl03-02.pdf
1 Background, method and scope of review
............................................................................
1
1.1 Aims and objectives
......................................................................................................
1
1.2 Methodology
.................................................................................................................
1
1.3 Scope of
review.............................................................................................................
2
2
Introduction..........................................................................................................................
3
2.1 Working time
directive..................................................................................................
3
2.2 What are long working hours?
......................................................................................
3
2.3 Prevalence of long working
hours.................................................................................
4
2.4 How could long working hours affect health and safety?
............................................. 5
3 Limitations of the research
base............................................................................................
6
3.1
Causation......................................................................................................................
6
3.2 Sample issues
................................................................................................................
6
3.3 Self report issues
...........................................................................................................
7
3.4 Possible
biases...............................................................................................................
8
3.5 Conceptual ambiguity
...................................................................................................
8
3.6 Mediating
variables.......................................................................................................
9
3.7 Conclusions
.................................................................................................................
10
4
Fatigue................................................................................................................................
11
4.1 Summary
.....................................................................................................................
11
4.2 What is
fatigue?...........................................................................................................
11
4.3 The Effects of long hours on levels of fatigue
............................................................ 13
4.4 Why do long hours lead to
fatigue?.............................................................................
14
4.5
Conclusion...................................................................................................................
15
5 Psychological health and stress
...........................................................................................
16
5.1 Summary
.....................................................................................................................
16
5.2
Definitions...................................................................................................................
16
5.3 Evidence for mental health effects (including stress) from general
reviews............... 16
5.4 Mechanisms involved and mediating factors
.............................................................. 18
5.5
Conclusion...................................................................................................................
19
6 Physical health
....................................................................................................................
20
6.1 Summary
.....................................................................................................................
20
6.2 Cardiovascular
disorder...............................................................................................
20
6.3 Mechanisms
involved..................................................................................................
21
6.4 Other physical health effects
.......................................................................................
22
6.5
Conclusion...................................................................................................................
22
7 Safety and
Accidents...........................................................................................................
24
7.1 Summary
.....................................................................................................................
24
7.2
Accidents.....................................................................................................................
24
7.3
Conclusion...................................................................................................................
26
8 Performance
........................................................................................................................
27
8.1 Summary
.....................................................................................................................
27
8.2 Performance
effects.....................................................................................................
27
8.3 Mechanisms
involved..................................................................................................
29
8.4
Conclusion...................................................................................................................
30
9 Work-Life
balance...............................................................................................................
31
9.1 Summary
.....................................................................................................................
31
9.2 Definition of Work-Life Balance
(WLB)....................................................................
31
9.3 The effects of working long hours on Work-life
balance............................................ 32
9.4 The effects of WLB practices that manipulate working
hours.................................... 33
9.5
Conclusion...................................................................................................................
34
i
10 Conclusions and
recommendations.................................................................................
35
10.1 The research base
........................................................................................................
35
10.2 Main conclusions from the
literature...........................................................................
36
10.3 Areas where research is lacking
..................................................................................
37
10.4 Recommendations
.......................................................................................................
38
11 References
.......................................................................................................................
39
12 Appendix 1 – Summary table of key
studies...................................................................
48
****************************************************************
Michael R. Frone, Ph.D.
Senior Research Scientist
Research Institute on Addictions
State University of New York at Buffalo
1021 Main Street
Buffalo, New York 14203
Office: 716-887-2519
Fax: 716-887-2477
E-mail:
frone@ria.buffalo.edu
Internet:
http://www.ria.buffalo.edu/profiles/frone.html
****************************************************************
Katherine Lawrence <
kathla@UMICH.EDU>
Sent by: Organizational Behavior Division Listserv <
OB@AOMLISTS.pace.edu>
01/31/2008 08:50 AM
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Subject
Cites for relationship btw work hours and productivity?
Hello all,
I have been asked by a friend outside the OB field for recommended
readings or research on the relationship between working long hours and
productivity. I know there is research examining the hazards associated
with shift work or night shifts (e.g., falling asleep while driving home,
on-the-job mistakes, stress at home), but is there research that looks at
the effect of (for example) 6 long (12-14 hour) days/week on knowledge
workers (such as laboratory scientists or R&D workers)?
I realize that this is the work pattern for a lot of academics (so we may
not want to look so close to home!), and likewise this is customary in
many product development companies as deadlines approach, but what if this
is "business as usual"?
Any pointers to relevant readings that I can pass along would be much
appreciated.
Thanks in advance,
Katherine
______________________
Katherine Lawrence, PhD
School of Information
University of Michigan
734.994.7904
kathla@umich.edu