This study develops a method that uses surveys of company managers to measure the size of a shadow economy. Our method is based on the premise that company managers are the most likely to know how much business income and wages go unreported due to their unique position in dealing with both of these types of income. We use a range of survey design features to maximize the truthfulness of responses. Our method combines estimates of misreported business income, unregistered or hidden employees, and unreported wages, to arrive at an estimate of the size of a shadow economy as a percentage of GDP. This approach differs from most other studies of shadow economies, which largely focus on using macro indicators. We illustrate the application of our method to three new EU member countries. We also analyze the factors that influence companies' participation in the shadow economy.

Research summary: To better understand why entrepreneurial orientation (EO) is positively associated with company performance, we propose and test a reconceptualization of how the components of EO (risk-taking, innovativeness, proactiveness) combine in driving performance. Drawing on financial economics theory, our conceptualization highlights that all three components positively contribute to performance, but in different ways. Risk-taking has a direct positive relationship with performance, which can be understood through the risk-return tradeoff that is central in financial economics theory. The relationship between risk-taking and performance is conditional on the level of innovativeness and thus innovativeness contributes to performance through its effect on the type of risk-taking. Proactiveness contributes to performance through its positive effect on the level of risk-taking. Managerial summary: This study analyzes three key drivers of company performance: risk-taking, innovativeness, and proactiveness. We show that constructive risk-taking is the central driver of company performance, mirroring the principle of risk and return in financial investment settings. Risktaking that is associated with innovation has a particularly strong positive relationship with performance, consistent with innovation being a driver of growth and profitability. More proactive firms tend to take on more risk and thus also perform better than less proactive firms.

In order to understand how the environment influences business owner/managers' attitudes towards tax morale, we build a theoretical model based on a neo-institutionalist framework. Our model combines three complementary perspectives on institutions-normative, cultural-cognitive and regulatory-instrumental. This enables a broader understanding of factors that influence business owner-managers' attitudes towards tax evasion. We test the resulting hypotheses using regression analysis on survey data on business owner/managers in Latvia-a transition country, which has undergone massive institutional changes since it was part of the Soviet Union over 25 years ago. We find that legitimacy of the tax authorities and the government (normative dimension), feeling of belonging to the nation (cultural-cognitive dimension) and perceptions of the risk and severity of punishment (regulatory-instrumental dimension) are all associated with higher tax morale for business owners and managers.

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Drawing on Baumol's concepts of productive, unproductive and destructive entrepreneurship and relevant amendments, this thesis aims to contribute to the entrepreneurship literature by developing a conceptual framework which allows operationalising the concepts for empirical assessment. Furthermore, using data from longitudinal survey, author makes one of the first attempts to address the concepts empirically. The results provide with support for the conceptual framework highlighting the importance to shift the focus from firms' activities to output on both, venture and societal levels, short and long term, when concepts are addressed empirically. Overall findings suggest that productive entrepreneurs are those who are less involved in behaviour such as tax avoidance or illegal business and show a higher level of entrepreneurial orientation.