Acceso abierto

Drivers of cost and time overruns: A client and contractor perspective

Peter Dahlin
Peter Dahlin
 y 
Ossi Pesämaa
Ossi Pesämaa
   | 18 may 2021
Organization, Technology and Management in Construction: an International Journal's Cover Image
Acerca de este artículo
Artículo anterior
Artículo siguiente
Cite
Article Category: Research Paper
Publicado en línea: 18 may 2021
Páginas: 2374 - 2382
Recibido: 06 may 2020
Aceptado: 12 ene 2021
DOI: https://doi.org/10.2478/otmcj-2021-0006
Palabras clave
© 2021 Peter Dahlin et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Regression on leadership drivers to change orders

Dependent variable: Leadership drivers to change orders
All Client Contractor
H1a: Opportunism 0.24*** 0.18 0.24***
H2a: Bargaining cost −0.17* −0.07 −0.17*
H3a: Communication cost 0.21** 0.31** 0.21**
R-square 10.40% 18.10% 11.10%
Adj. R-square 9.20% 15.40% 9.10%

Regression on contractual drivers to change orders

Dependent variable: Contractual drivers to change orders
All Client Contractor
H1b: Opportunism 0.01 −0.09 0.04
H2b: Bargaining cost 0.12 0.37*** −0.07
H3b: Communication cost 0.09 −0.10 0.27**
R-square 4.00% 11.60% 6.40%
Adj. R-square 2.40% 8.70% 4.30%

Correlation between composite scores

Composite score Mean SD N (1) (2) (3) (4) (5)
1. Opportunism 3.57 0.73 234 0.79
2. Bargaining cost 3.34 0.67 234 0.39** 0.75
3. Communication cost 3.30 0.81 234 0.41** 0.48** 0.82
4. Leadership drivers to change orders 3.10 0.86 234 0.26** 0.02 0.22** 0.82
5. Contractual drivers to change orders 3.50 0.90 234 0.10 0.17** 0.16* −0.19** 0.83

Mean differences between clients and contractors

Question Role N Mean SD F-value p-value
OPP1: The counterpart presents misleading information to protect their interests. Client 95 3.58 1.05
Contractor 139 3.66 0.93 0.41 0.525
Total 234 3.63 0.98
OPP2: The counterpart promises to do things without actually doing them later. Client 95 3.55 1.01
Contractor 139 3.69 0.87 1.35 0.247
Total 234 3.63 0.93
OPP3: The counterpart does not always act in accordance with our contract. Client 95 3.69 0.84
Contractor 139 3.85 0.76 2.13 0.146
Total 234 3.79 0.80
OPP4: The contractual partner sometimes breaks informal agreements to maximize their own benefit. Client 95 3.18 1.01
Contractor 139 3.24 1.00 0.19 0.663
Total 234 3.21 1.00
BC1: Negotiations of financial aspects of the contract are typically difficult and lengthy. Client 95 3.40 0.97
Contractor 139 3.45 0.93 0.13 0.715
Total 234 3.43 0.94
BC2: When unexpected changes arise, at least one party was dissatisfied with negotiated outcomes. Client 95 3.24 0.91
Contractor 139 3.24 0.91 0.00 0.969
Total 234 3.24 0.91
BC3: Our negotiations with this contracting partner are usually difficult. Client 95 3.34 0.96
Contractor 139 3.14 0.96 2.43 0.120
Total 234 3.22 0.97
BC4: Neither party is willing to lower their demands at their own cost. Client 95 3.44 0.73
Contractor 139 3.49 0.72 0.24 0.623
Total 234 3.47 0.72
CC1: Information from the contractual partner is poorly formulated and difficult to understand. Client 95 3.27 0.93
Contractor 139 3.15 0.92 1.00 0.318
Total 234 3.20 0.92
CC2: Important information from the contractual partner seldom comes at the right time. Client 95 3.38 0.99
Contractor 139 3.46 0.92 0.42 0.520
Total 234 3.43 0.95
CC3: Information from the contractual partner is either incomplete or too voluminous to understand. Client 95 3.27 0.99
Contractor 139 3.29 0.96 0.01 0.913
Total 234 3.28 0.97
LDCO1: The counterpart’s (lack of) interpersonal skills causes change orders. Client 95 3.13 1.08
Contractor 139 2.71 0.98 9.24 0.003
Total 234 2.88 1.04
LDCO2: The counterpart’s (lack of) leadership skills causes change orders. Client 95 3.18 1.03
Contractor 139 2.87 1.03 5.03 0.026
Total 234 3.00 1.04
LDCO3: The counterpart’s lack of competence causes change orders. Client 95 3.34 1.01
Contractor 139 3.49 1.14 1.11 0.293
Total 234 3.43 1.09
CDCO1: Imprecise projecting of on-site conditions causes change orders. Client 95 3.23 1.26
Contractor 139 4.20 0.91 46.78 0.000
Total 234 3.81 1.17
CDCO2: Incomplete early-stage planning causes change orders. Client 95 3.12 1.14
Contractor 139 3.63 0.97 13.50 0.000
Total 234 3.42 1.07
CDCO3: Incomplete contracts cause change orders. Client 95 2.97 1.13
Contractor 139 3.99 0.87 60.82 0.000
Total 234 3.58 1.11
CDCO4: Poor follow-up of similar projects causes change orders. Client 95 2.77 1.02
Contractor 139 3.51 0.99 0.000
Total 234 3.21 1.06
eISSN:
1847-6228
Idioma:
Inglés
Calendario de la edición:
Volume Open
Temas de la revista:
Engineering, Introductions and Overviews, other
RSS Feed de revista