Public construction projects set the standards for new procedures and perspectives within the industry. A way of improving procedures is through communication and the inclusion of all involved parties. It is therefore the purpose of this report to investigate how communication through organisational culture, power and trust can affect the incorporation of the tenant in the construction process. Two case studies, both having public future tenants and public clients, were chosen to enable the investigation of the three parameters of communication, organisational culture, power and trust. The empirics showed that the tenant was often excluded from the construction process due to their differing cultural background. The results also showed that the tenant was considered to have lower status which was exploited at times. In addition, it was found that although opportunistic behaviour was present in the construction project, it was a greater internal issue within the tenant organisation. In the conclusion the authors recommend construction management to evaluate the consequences of incorporating the tenant in the construction meetings as it could lead to less construction errors. They further recommend the public organisations to oversee their distribution of resources in order to avoid opportunistic behaviour. / Offentliga byggprojekt bidrar med normer för nya tillvägagångssätt och perspektiv inom branschen. Ett sätt att förbättra dessa metoder är genom kommunikation och att inkludera alla inblandade parter. Syftet med denna rapport är därför att studera hur kommunikation genom organisationskultur, status samt förtroende kan påverka inkluderingen av hyresgästen i byggprocessen. Två fallstudier, båda med offentliga framtida hyresgäster och offentliga beställare, valdes för att undersöka de tre parametrarna av kommunikation; organisationskultur, status och förtroende. Empirin visade att hyresgästen ofta uteslöts från byggprocessen på grund av sin skiljda kulturella bakgrund. Resultaten visade vidare att hyresgästen ansågs ha en lägre status vilket de andra parterna utnyttjade. Dessutom visade resultaten att opportunistiskt beteende i byggprojektet var mer tydligt i de interna relationerna inom hyresgästorganisationen än i de externa. I slutsatsen rekommenderar författarna byggprojektledningen att utvärdera konsekvenserna av att inkludera hyresgästen i byggmötena då det kan leda till mindre byggfel. Vidare rekommenderar författarna offentliga organisationer att se över distributionen av resurser för att undvika opportunistiskt beteende.

公共工程為國家建設的基礎，其攸關人民生活品質並影響國家經濟發展。當今政府公共工程建設多以委外方式進行，然而對於公共工程績效之影響因素進行研究，將有助提供政府機關在招標時評選廠商之參考，以及在公共工程專案進行時，作為與專案經理溝通協調之依循。 依過去之研究多聚焦於控制層面，並認為提升技術方法將能帶來有效的管理，進而提高專案的績效。然除了控制管理之外，仍有許多關鍵外在因素影響公共工程專案的成敗；創新即是其中之一。而過去政府機關及營建專案管理者經常忽略創新的重要性，最終導致公共工程的失敗。因此探討創新對於公共工程專案的實益是有其必要性。 本研究最基本的目標在於調查創新實務作法之應用對於公共工程專案績效的影響；其中創新實務作法包含管理與服務創新、施工方法創新、建物功能創新、環保永續創新，而公共工程專案績效則表現在安全、品質、時程、成本以及業主滿意度。另一項研究目的則為探討公共工程專案類型(分為建物工程專案、基礎工程專案及工業工程專案)，在創新實務作法之於公共工程專案績效的影響中，是否扮演干擾效果。 有關本研究問卷調查時間自2015年9月至同年11月，有效問卷共計168份，每一份問卷代表一個公共工程專案的執行與績效表現。另本研究再以實際案例-成功及失敗的個案，剖析此兩個相似案例在創新實務作法與公共工程專案績效表現之間的關聯性。研究結果顯示，創新實務作法之應用與公共工程專案的績效表現具有顯著正向的影響；且公共工程專案類型在兩者之間具有干擾效果，亦即是創新的影響程度會因公共工程的類型而有不同，其於建物工程專案與工業工程專案之應用上對於品質績效的正向關係較為明顯。最後依此分析結果提出未來研究及政策建議。 / Public construction projects are associated with the infrastructure of a nation. Developing public construction projects is also important for the economic development of a nation. Recently, most of public construction projects are outsourced. Research on factors influencing the success of public construction projects can assist government with selecting suitable partners and communicating with project managers. Most of the previous work has focused on project control problems, assuming that the better methods or techniques would lead to better management and thus the successful performance of projects. However, there are many factors outside the control of management which may lead to the success of a project. Innovation may be one of the major causes of public construction project success. However, many construction organizations ignore innovation leading to a poor public construction project performance. Thus, there is a need for exploration of the benefits of innovation on public construction project performance. Accordingly, the primary objective of this research was to investigate the effect of innovation practices (including management and service innovation, construction method innovation, facilities function innovation, and environmental protection and sustainability innovation) public construction project performance in terms of safety performance, quality performance, schedule performance, cost performance, and owner satisfaction. The second objective was to determine whether innovation practice on public construction project performance was moderated by project type (i.e., building, infrastructure, and industrial projects). The data were collected from September to November 2015. A total of 168 valid questionnaires were analyzed. Each questionnaire is representative of a public construction project. In addition, case studies were used to assess the relationships between innovation practice and public construction project performance. Accounts of two similar projects, one successful and one not, were used to investigate the associations. The results suggest that adoption of innovation practice has a positive effect on public construction project performance. The results also show that project type has a moderating effect on the relationship between adoption of innovation practice and public construction project performance. In other words, the relationship between adoption of innovation practice and public construction project performance depends on project type. This indicates that the association between adoption of innovation practice and quality performance is more strongly evident for industrial and building projects. Finally, the paper proposes directions for future research and recommendation for policy development according to the findings.