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In this chapter, we focus on the social integration of young immigrants in Sweden who themselves and/or one or both of their parents came from Iran or former Yugoslavia. In particular, we look at the share of alters in their core networks who are of the same parental national origin and how this has changed within a period of four years. To explain network changes, we consider the parental national origin similarity among them, changes in opportunities to meet network members, and important life events.

We analyzed two waves of survey data collected in 2010 and 2014 from 1,537 individuals who live in Sweden and who were all born in 1990, including 325 immigrants from Iran, 447 immigrants from former Yugoslavia, and 805 native Swedes. The results indicate that: (a) the share of parental national origin similar alters in the core networks of immigrants significantly increases over time, (b) first-generation immigrants in particular increasingly associate with others who are of the same parental national origin, (c) important life events hardly result in network changes, and (d) schools and work places are social contexts that enhance the social integration of immigrants, because in these contexts immigrants meet and engage in personal relationships with individuals who do not share their parental national origin.

This paper will examine the unsafe work practices that are plaguing the construction industry. Statistics show that four out of five of all workplace accidents are attributed to unsafe behaviour. Research studies have sought to understand worker self-protection. For example, it is difficult to make predictions of conditions that influenced worker’s behaviour to act unsafely or safely in a given work situation. It is evident there is a gap in the literature in this area of research, most notably failing to understand the underlying “why” factors. The aim of the study is to identify and examine the proximate set of contributing factors most likely to have an influence on workers’ decisions about participation in unsafe behaviour.

To perform the study, questionnaires were adopted, and 225 construction workers from 9 construction companies participated in the study.

Results showed that both underlying organisational factors and individual factors could affect the risk aversion among construction workers. The paper also highlights measures to create a safe work environment to minimise unsafe behaviour among construction workers. Results from the study are important to help organisation to systematically plan for a good working environment.

As the results were based only from the questionnaires, a deeper understanding behind the workers’ responses was not probed.

Construction companies should work at several organisational levels at the same time. It is necessary to include levels such as individual, group, workplace and management levels, thus taking a system perspective on risk behaviour and safety.

We develop a model to analyze the growth of social organizations as a spatially nested mixed-influence diffusion process. Drawing on gravity models and threshold models, we split the social system into social units and model the diffusion process as a system of differential equations. The diffusion of a new organizational form in a social unit is a function of an internal process within the unit and external processes in the surrounding units. The model is confronted with data on the growth of trade unions in Stockholm, Sweden, between 1890 and 1940.