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This paper reviews the current literature on the major challenges faced by building contractors in the UK due to COVID-19 to create an evaluation framework.

A PRISMA scoping review systematically maps the information published and establishes the potential challenges, as a precursor to a literature review that synthesises the data available to establish an initial COVID-19 evaluation framework to build a rationale for a future series of studies.

The research identified these seven challenges: health and safety on-site, economic cost, possible legal exposures, manpower availability, instability of the supply chain and subcontractors, and the uncertainty related to the constant and unpredictable evolution of the pandemic. The magnitude of each challenge was also found to differ depending on the size of the contractor, the rigor of local regulations and the sector where the contractor works.

This research contributes to increasing understanding on the subject and provides an initial assessment framework, based on these seven parameters, so that contractors can analyse their weaknesses and plan specific priorities so that their companies can remain competitive, minimising the impact of COVID-19 and possible future waves.

This research is timely and relevant as it produces the first academic review on how COVID-19 has affected contractors and the construction stage. This document gives a holistic view of the new scenario created by COVID-19 and creates a self-assessment system for contractors to test their resistance to COVID-19.

Construction contractors serve as economic partners to owners of construction projects, but often times, they could depict opportunistic tendencies which are to the detriment of the client. This study aims to focus on the awareness of construction professionals with respect to influencing factors of construction contractors’ opportunism.

A questionnaire survey was adopted in eliciting responses from construction professionals, namely, architects, quantity surveyors, builders and engineers. In total, 337 questionnaires were distributed, of which 264 were retrieved and deemed fit for analysis. Methods of data analysis used are mean item score, factor analysis, analysis of variance, Kruskal–Wallis and Student Newman Kaul post hoc test.

The study revealed that the level of construction professionals’ awareness of contractors’ susceptibility of opportunism is very high. Equally, the most ranked factor is “No sanction for not reporting inconsistency of drawings.” The postulated hypothesis was subjected to a test, and the result showed that there is a significant difference in professionals’ perceived level of awareness of factors responsible for contractors’ opportunistic behaviors.

The study brings to the fore professionals’ knowledge of the awareness of influencing factors to contractors’ opportunism. The established level of its awareness portends a dangerous trend and has a large negative impact on the construction industry as this opens a vista to discouraging prospective investors, developers and owners, taking into cognizance the effect this would have on the economy.

As in other developing countries, increased highway development in Vietnam provides enormous opportunities for international construction companies (ICCs). However, a prolonged schedule delay (SD) can have an extremely detrimental impact on a project’s efficiency, cost and investment reputation. The purpose of this paper is to identify potential SD risk factors in international highway projects (IHPs) in Vietnam, and to explore the effects of and influences on such factors. A specific risk management framework is proposed as a useful tool for ICCs.

A system of SD risk indicators is presented for IHPs in Vietnam through a questionnaire survey. The system comprises 50 indicators that are grouped into 12 main factors. A structural equation model (SEM) is then used to assess the influences and mechanisms of these factors. Based on the obtained results, corresponding suggestions for preventing SD risks are presented and discussed.

First, among the 12 aforementioned major factors, the authors identify eight facors that have significant effects on IHP SDs. Second, the SEM analysis reveals that policy flaws and the fiscal ability of the owner play the most important roles, on account of their direct and indirect influences on SDs.

Considering stakeholders and external environmental effects, a system of indicators is introduced to explore SD risks to IHPs. In particular, an SEM is used to assess the effects of potential SD factors and characterize their interacting influences. This study could help ICCs to avoid or mitigate project delays and cost overruns in Vietnam, and also provide valuable lessons for other developing countries.

Due to its cost savings nature and ability to ensure constant jobs for contractors, this study aims to assess the capability of the labour-only procurement system to serve as a surviving strategy for construction contractors in a challenging economy.

The study adopted a mixed-methods design. An interview and questionnaire were used to harness information from 98 construction participants who have been involved in labour-only procured projects. These respondents were identified through snowballing. Frequency, percentage, mean item score, Mann–Whitney u-test and content analysis were used in analysing the data gathered.

Result revealed that participants are willing to execute more projects through this system because it gives considerable cost savings for clients and provides reduction in contractor’s risk and allows them to maintain healthy cash flow. The main factors influencing its usage are the client’s decision to procure materials, need for job at hand for contractors and the need for referrals from clients for subsequent jobs.

Findings of this study will assist contractors to understand the potential of this procurement system as a surviving option in a harsh economy. Small and medium contractors can make use of this available opportunity of having projects at hand at reduced risk to ensure continuous cash flow to keep their organisations afloat.

The contribution of this study to the body of knowledge lies in its provision of a reasonable insight on the inherent nature of a procurement system as a surviving strategy for contractors unlike the usual assessment of the generic survival strategies adopted in other studies.

This paper aims to present the outcome of a study conducted on the impact that cost-based contractor selection (CBCS) might have on construction project performance. Several criteria are normally used to select construction contractors, competitiveness of the quoted prices of the prospective contractors is one such important criterion. However, choosing contractors solely on the basis of the quoted price may cause poor performance in the construction project.

A quantitative approach was adopted. A critical review of the literature was conducted to develop 50 survey questions relating to the problems that CBCS might have on construction project performance.

Analysis of close data obtained from the survey of construction experts showed the nature of project performance problems associated with the CBCS to be project time delays and non-compliance with construction standards. The major reason they occurred was found to be the reduced profit margin for contractors.

The research sample size is small and restricted to construction professionals in Brunei.

The study findings present updated information to construction professionals about the inherent impacts of choosing contractors based on cost. Furthermore, this study enhances the approach of selecting contractors within the construction industry.

The study made strong and unique arguments about the problems associated with choosing construction contractors based on cost. This study contributes to the body of knowledge relevant to the management of construction projects.

The purpose of this paper is to improve the understanding of what clients value from contractors’ services. Understanding client values and the way by which clients perceive value will contribute to client-perceived value within contracting services.

A literature review was conducted to understand how clients perceive value in the construction industry. In addition, conducting expert interviews and document analysis helped in achieving the research purpose.

The findings show that values associated with time, cost and quality can be considered as important client values, while they are not exclusive values for assessing contractor service anymore. Construction clients are concerned about health and safety, low rate of environmental impact, guarantees, creativity, technology transfer, value for money, reliability and tangibles of their contractors’ services. In addition, they value their contractors’ behaviour, attitude and professionalism.

The study has disseminated different client values, through classified outcomes, to make the knowledge area more available to construction service providers. This study’s findings helped in understanding client values and how clients perceive value from contractors’ services. With this information, contractors are able to provide better services to clients. Satisfactory delivery of the values identified in this study is believed to have the greatest impact on client-perceived value within contracting services. Developing a management strategy that recognises, prioritises and satisfactorily delivers these values is essential to ensure that highest level of client-perceived value is achieved.

The construction literature is focussed on traditional values related to time, cost and quality, while this study highlighted the role of values such as trust, commitment, communication and other non-result-ordinated values essential for achieving client satisfaction. This study’s findings proposed a new practical assessment concept to value construction contractor services.

Benchmarking of best practices has proved useful in the business and manufacturing sectors. However, benchmarking is not established in the construction industry in general and in government organizations in particular. A study of the contractor selection methodologies used by various clients confirms the multiplicity of approaches in practice. This paper aims at identifying some relevant ‘best’ practices and highlighting ‘innovative’ contractor selection approaches that have been used by large public clients. A ‘co‐operative’ and ‘non‐competitive’ conceptual benchmarking model is formulated and presented with a view to encouraging continuous improvement in contractor selection for construction projects.

The purpose of this paper is to identify and assess the likelihood of occurrence and degree of impact of the risk factors on construction projects within the Ghanaian construction industry.

A survey of randomly selected samples yielded responses from 34 contractors, 46 consultants, and 23 clients or owners (private and public) within the Ghanaian construction industry. Literature review is used to identify 25 relevant risk variables which were grouped into ten composite factors and then incorporated into the design of the survey instrument. Survey response data were subjected to descriptive statistics and analysis of variance (ANOVA), and subsequently the exposure rating levels were determined, which enabled the categorisation of the probability‐impact scores in low, medium and high levels.

Results of this study indicate a disparity of the ranking of the degree of occurrence and impact among the groups. There was a statistical difference at the p<0.05 level significant for five out of 25 risk factors occurrences as follows: “construction methods”, “inflation”, “weather condition”, “ground conditions and contaminant conditions” and “poor communication amongst project team” and only one for the degree of impact scores for “price fluctuation”. Based on the composite risk factors, the financial and economic factors were found to be the most likely to occur and have the most impact on projects, whereas legal risk factor was found to be a low weighted risk, as it had the least likelihood to occur and the least impact score. The post hoc comparisons using the Tukey HSD test also indicated differences between the contractor and clients in the ranking of construction methods risk variable, but no significant differences between contractors/consultants and clients/consultants.

Geographically, only respondents from construction organisations in the Greater Accra Region were considered, which limits generalization of the findings. The research did not also distinguish foreign from local contractors in the classification, as literature has shown that the perception of the degree of impact and likelihood of occurrence of risk analysis could also vary according to the degree of ownership.

The paper makes a contribution by exploring the degree of risk occurrence and its impact on construction projects within a developing economy and much lesser studied context. The paper provides insights on the perception of risk among construction professions in Ghana and it also provides some insights on the current levels of risk for foreign contractors wishing to operate in Ghana.

There is low adoption rate of existing environmentally sustainable construction frameworks. Contractors have dwindled capability to adapt to environmentally sustainable construction (ESC) towards achievement of SDGs. The aim of this paper is to develop a framework that leverages both theoretical and practical aspects of sustainable construction to enable contractors' adaptation to ESC at the micro level.

Due to the social constructivism orientation of the objectives of this research, abductive approach and qualitative research strategy were adopted. Data were obtained through interviews and validation focus group discussion. Content analysis and thematic template analyses techniques were employed to conduct qualitative data analyses.

There are peculiar ESC barriers that need to be overcome by contractors in the study area. Legislative and financing efforts of stakeholders are key contractors' ESC adaptation drivers. Contractors in less affluent societies, such as Ghana, require high resilience, dense and centralized social network structures and isomorphic and coercive drivers to be able to adapt to ESC.

The scope of this research is limited to the data gathered from large construction firms in Ghana, a developing country in the sub-Saharan region.

This is one of the first papers that provide guidelines on developing capability of contractors in a developing country to adapt to ESC. The paper addresses the challenge in the ecological modernization theory by adducing empirical evidence to prescribe guidelines on how contractors can increase rate of efficiency through collaborative strategies that engender ESC.

The ability of construction contractors to engage in construction bond agreement with guarantors depends on capital, experience, capacity and continuity. Using these criteria, the purpose of this paper is to provide insights into the bonding capacity of Nigerian contractors.

Factors required for bonding were examined based on a set of questions addressed to managers of contracting firms and personnel involved in issuing bonds and guarantees in commercial banks and insurance companies. The scorecard approach was employed to determine the bonding capability of the contractors.

Contractors’ financial strength and past performance on previous projects are the two important factors considered by guarantors in granting bond to contractors. However, the condition surrounding the bond, the legal capacity of the guarantor to issue bond and the identity of the guarantor are mostly considered by contractors in approaching a potential guarantor. Using the scorecard approach, about one-third of contractors have the necessary requirements to engage in construction bond agreement with guarantors. This ability of contractors is affected by years of experience of the firm but not by their location nor years of experience of their manager.

It is necessary for contracting firms to increase their capital base through merging, borrowing, etc., and also engage experienced professionals and workers in the execution of construction projects, as this will eventually improve their bonding ability.

The study is limited to construction contractors registered with Ondo and Lagos State Governments and guarantors that are banks and insurance companies in Nigeria.

The paper specified various areas of concerns for Nigerian contracting firms in their bid to enhance their bonding ability. This will help them in overcoming various challenges and bottlenecks that may arise in securing bonds and guarantees from guarantors.