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The purpose of this paper is to understand the origins and nature of unexpected events that affect complex projects, by relying on a view of projects as social systems. The authors argue that the project relation to its environment is mediated by a model of this environment that is embedded in the communications between project participants. The adequacy of this model to the causal texture of the environment inspired a first, epistemological, dimension for characterizing events: event predictability. The nature of the boundaries between system and environment inspired the second dimension: locus of generation.

This study followed a multiple‐case study approach. The authors collected data in 17 complex projects, in three types of industries: construction, IT/IS, and pharmaceutical.

In total, nine categories of unexpected events were identified from the intersection of two dimensions: event predictability and locus of generation.

The empirically validated two‐dimensional framework sheds new light on the way organizations react to unexpected events and on the reasons for the eventual project performance.

The findings show that project managers tend to underestimate certain risks. This research will help managers better predict those types of risks. However, some risks are simply unpredictable, therefore the authors argue for the necessity to prepare projects for the unforeseen.

Analyzing the previous literature in unexpected events, the authors identified two main, but opposing, theoretical perspectives: one rooted in decision theory and the other that sees projects as social systems. The value of this paper comes from the original mode in which the authors propose to reconcile these perspectives, by viewing projects as networks of communicative couplings between actors.

The purpose of this paper is to introduce the papers comprising a special issue of the journal. The central theme of this special issue is “Projects and organisations: adding rungs to the ladder of understanding project management and its relationship with the organisation”. It is dedicated to research that explores and proposes different avenues to contribute to the development of the field of project management from this perspective of projects and organisations.

The Guest Editors solicited academics and collaborators of the Project Management Research Chair at the École des sciences de la gestion, Université du Québec à Montréal (ESG UQAM). Following a call for papers, five were selected that underwent a double‐blind peer‐review process.

The five selected articles each provide unique perspectives and insights. Viewed as a set, their contributions view projects and organisations from three main perspectives: project management governance issues; management of innovative and IT projects; and processes, practices and tools. The set brings new empirical data, ideas and theoretical frameworks to bear that justify the extension of the current project management paradigm, and suggest that project management be viewed as a critical function of the organisation.

The set of papers encourages scholars to continue to examine organisational concerns related to project management with the goal of explaining and enhancing important relationships among organisational phenomena and the project management field.

By bringing this special issue together, the Editor played an important role in adding rungs to the ladder of understanding project management and its relationship with the organisation.

The oil and gas construction projects are affected negatively by the drop in oil price in recent years. Thus, most engineering, procurement and construction (EPC) companies are opting to optimize the project mainly to mitigate the source of risks in construction to achieve the project expectation. Risk factors cause a threat to the project objectives regarding time, cost and quality. It is additionally a vital component in deviating from the client's expectation of productivity, safety and standards. This research aims to investigate the causes of risk in the oil and gas construction projects in Yemen.

A comprehensive literature review from various sources including books, conference proceedings, the Internet project management journals and oil and gas industry journals was conducted to achieve the objectives of this study. This initial work was predicated strictly on a literature review and the judgments of experts to develop the risk factor framework for the oil and gas construction projects in Yemen.

The authors found a few studies related to risk factors in oil and gas construction projects and shared a similar view about general construction projects. However, only a fraction of the factors accepted have included the variances of other studies on a regional basis or specific countries, such as the Yemen situation, due to the differences between the general construction industry and oil and gas industry. Moreover, the factors of these attributes were still accepted due to their applicability to the oil and gas industry, and no significant variances existed between countries. Research has indicated that 51 critical factors cause risks in the oil and gas construction projects in Yemen. Such risk factors can be divided into two major groups: (1) internal risk factors, including seven critical sources of risks, namely client, contractor, consultant, feasibility study and design, tendering and contract, resources and material supply and project management; and (2) external risk factors, including six sources of critical risk factors, namely national economic, political risk, local people, environment and safety, security risk and force-majeure-related risk factors. A risk factor framework was developed to identify the critical risk factors in the oil and gas construction projects in Yemen.

This research was limited to the oil and gas construction projects.

Practically, this study highlights the risk factors that cause a negative effect on the success of oil and gas construction projects in Yemen. The identification of these factors is the first step in the risk management process to develop strategic responses for risks and enhance the chances of project success.

The identification of risks factors that cause the failure of construction projects helps develop response strategies for these risks, thereby increasing the chances of project success reflected in the oil and gas sector, which is a main tributary of the national economy in developing countries.

This research is the pioneer for future investigations into this vital economic sector. Given the lack of resources and studies in the field of construction projects for the Yemeni oil and gas sector, the Yemeni government, oil companies and researchers in this field are expected to benefit from the results of this study. The critical risk factors specific to the oil and gas construction projects in Yemen should be further investigated with focus only on Yemen and its oil and gas industry players.