This thesis looks at the effects of flexible working arrangements on workers' labour market outcomes. The particular type of flexible working arrangement analysed in this thesis is called "flexitime". This is an arrangement which gives workers the freedom to choose when to start and end their work. Flexitime provides workers with a new way to cater to their domestic responsibilities and in turn may reduce the costs of participating in the labour market. Therefore, it is closely connected with workers' compensation structure, human capital accumulation process, labour supply and job mobility. The effects of flexitime on workers' labour market outcomes are analysed from three aspects: wage, labour supply, and job mobility. The first chapter gives an introduction and overview of the thesis. The second chapter is a study on the compensating wage differentials associated with flexitime. In general I do not find convincing evidence showing the existence of compensating wage differentials associated with flexitime. One possible reason might be that flexitime brings additional benefits to firms (such as increased productivity and reduced turnover rate) so that firms may not necessarily need to reduce actual wages in exchange for flexitime provision. In the third chapter, I develop a model describing how flexitime may affect workers' labour supply decisions. The main finding of the model is that flexitime will increase workers' labour supply when the benefit associated with flexitime (increased child care production efficiency) is high relative to the cost of wage reduction (prediction 1). Meanwhile, the model also predicts that flexitime causes high human capital workers to increase their labour supply more than low human capital workers (prediction 2). Empirical findings show that flexitime is positively associated with working mothers' labour market hours, which confirms model prediction 1. However, there is arguably insufficient empirical evidence verifying model prediction 2. The fourth chapter considers the relationship between flexitime and workers' job satisfaction and job mobility. Flexitime is associated with high job satisfaction levels for both male and female workers. It also reduces the probability of quitting for female workers with young children. Male workers' job mobility decisions are not significantly affected by flexitime. The fifth chapter gives the conclusion of the thesis.

This thesis compares two datasets, the Science and Engineering Indicators 2006 (SEI) and the 1993 National Survey of College Graduates (NSCG), and looks at the impact of sex on full-time annual salary while controlling for different variables. The SEI provides a study based on data from 1999 about the sex effects on salary, adds controls, and records the changes in the effect of sex on salary. The SEI study finds after adding controls for worker heterogeneity and compensating wage differentials, women with bachelor's degrees earn 11.0% less, women with master's degrees earn 8.0% less, and women with doctoral degrees earn 8.4% less than their male counterparts. My analysis of the NSCG finds after adding controls, women with bachelor's degrees earn 18.5% less, women with master?s degrees earn 18.7% less, and women with doctoral degrees earn 15.3% less than their male counterparts. Additionally, in the NSCG and the SEI the field of degree impacted the sex effects the most for bachelor's and master's degree holders. This research is useful to study the difference between these datasets from different time periods. Specifically, the difference in the sex wage gap and in the changing importance of certain variables affecting the sex wage gap.

The aim of this work is to find out why the structure of the market for sexual services changed in the years 1999 -- 2009 : why did the number of erotic clubs and the sex workers in clubs and on streets decrease and why did the number of sex workers in apartments increase? The change in nationality of composition of consumers and the development of internet are main factors of the changes. A high correlation proved to be between the number of sex workers and the number of tourists. Because of economic convergence tourists can buy less sexual services than in past whereas Czech can buy more. Other question is why earnings of sex workers are higher in comparison with wages of the women with the comparable education. The main factor is a social stigmatization.

Workers who earn wage premiums for adverse job characteristics face a higher tax-price than peers of equal human capital working under more favorable conditions. Facing a higher cost per unit for public goods, they in turn demand a relatively small public sector. This may explain patterns of political affiliation across industries where differences in nonpecuniary aspects are often significant. I test this with county level data on fatality rates and support for the Republican candidate in the 2004 US Presidential election, finding that fatality rates remain positive and significant drivers of GOP support through various regression specifications. These results are robust to cross-sectional and panel data on individual contributions reported to the Federal Election Commission for the 2004, 2008, and 2012 US Presidential elections.

A presente tese tem por objetivo geral apresentar dois ensaios sobre os acidentes do trabalho à luz da teoria dos diferenciais salariais compensatórios sobre os empregos de risco no Brasil. Para tanto, a partir da base de dados da Relação Anual de Informações Sociais (RAIS), fornecida pelo Ministério do Trabalho (MT), são construídas variáveis relacionadas às taxas de ocorrência de acidentes do trabalho (fatal, lesão e doença) para as subclasses da Classificação Nacional de Atividades Econômicas (CNAE). No primeiro, intitulado \"O Valor estatístico de uma vida: estimativas para o Brasil\", é calculado o valor estatístico de uma vida para diferentes amostras de trabalhadores (homens, mulheres e trabalhadores blue-collars) com o objetivo de fornecer um parâmetro financeiro referente às indenizações a serem pagas a trabalhadores (e às suas famílias, em caso de acidentes fatais) que sofreram algum dos tipos de acidentes listados anteriormente no exercício de sua atividade laboral. No segundo ensaio, intitulado \"O impacto da \"Lei do Descanso\" nas horas trabalhadas, nos salários e nos acidentes não-fatais do trabalho dos caminhoneiros brasileiros\", é estimado o método de diferenças em diferenças generalizadas para avaliar se a Lei de Descanso, implementada em 2012 no Brasil, visando regular a jornada diária de trabalho e de descanso dos caminhoneiros brasileiros, com o intuito de melhorar as condições de trabalho e de reduzir os acidentes envolvendo estes profissionais, gerou diferenças estatísticas nas horas mensais trabalhadas, nos salários e nos acidentes não-fatais do trabalho (por lesão ou doença) destes trabalhadores. / The purpose of this thesis is to present two essays on labor accidents in the light of the theory of compensatory wage differentials on hazardous jobs in Brazil. To do so, based on the data base of the \"Relação Anual de Informações Sociais (RAIS), provided by the Ministry of Labor (MT), I use variables related to the rates of occurrence of labor accidents (fatal, injury and illness) constructed for the subclasses of the \"Classificação Nacional de Atividades Econômicas\" (CNAE). In the first essay, entitled \"The Value of a Statistical Life: Estimates for Brazil\", the value of a statistical life is estimated for different samples of workers (men, women and blue-collar workers) with the objective of providing a financial parameter related to the indemnities to be paid to workers (and their families in case of fatal accidents) who suffered any of the types of accidents listed, previously, in the exercise of their work activity. In the second essay, entitled \"The Impact of the \"Rest by Law\" on hours worked, wages, and non-fatal accidents of Brazilian truck drivers\", the method of generalized differences-in-differences is estimated to assess whether the \"Rest by Law\", implemented in 2012 in Brazil, aimed to properly regulate the daily work of the Brazilian truck drivers, with the purpose of improving their working conditions and reducing accidents involving these professionals, generated statistical differences on monthly hours worked, in wages and in non-fatal accidents of work (injury or illness) of these workers.

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