The topic of the submitted diploma thesis are matters which restrict the performance of work activity as legal facts which cause a temporary suspension of work obligation. Therefore it interferes fundamentally into the labor-law relationship between the employee and the employer. As no employment contract is carried out, it brings along significant effects, especially on the social status of the employee. At the same time the employer faces difficulties connected with organization of assignments as well as increased costs of workforce. The author of the thesis strives for a comprehensive description of this issue. In the first part of the thesis she gets a understanding of general definition of obstacles at work and their consequences in the labor-law relationship. The impact of obstacles on the stability of the employment, trial period and vacation is described in detail. In the next part of the thesis the author deals with the current law concerning individual obstacles at work. She examines its necessity and up-to-dateness as well as the possibilities of future directions and changes of the law de lege ferenda. At first the attention is focused on important personal obstacles to work on the employee's part - in particular the employee's temporary sick leave, maternity leave, parental leave and...

Economists have rejected the popular view that time use is primarily influenced by local customs and law, and instead argue that it is determined by optimal choices of economic agents and the market mechanism. However the analysis of time allocation has been focused on the labor-leisure choice problem which posits a worker who wants more leisure because of his preference for leisure over work. Thus going beyond the standard model, these essays add to the theory of the economics of time use. First I examine why married men earn more. I explore the possibility that differences in household work by marital status can explain the observed male marital wages advantage. Depending on the type and timing of household work, I segregate it into flexible and inflexible household work, using the American Time Use Survey. Empirical results provide strong support for the productivity difference between married and never married men. Household work has significant negative and differential effects on wages. The effects are not only driven by total time spent on household work, but also by types and timing of household work. The result shows that inflexible household work has a stronger negative effect on wages than flexible household work. Second I study how taxes affect time and goods allocation in home production. I claim that an increase in sales taxes encourages households to substitute away from the market goods input in favor of untaxed non-market time input. I explore the substitution response by relating household market purchases and time use. The theory part shows that the size of elasticity of substitution between market goods input and time input is crucial for understanding the government's optimal tax policy. Then I show that it is optimal to impose lower taxes on goods used in the production of commodities with a higher elasticity of substitution. In the empirical part, I estimate sizes of elasticities of substitution of goods for time with the combined survey of Mexican household consumption expenditures and time allocation for 2002. I find that the elasticity of substitution for 'Eating' is lowest. Finally wage compensation for climate is examined. Using the Merged Outgoing Rotation Group File from 2002 to 2007, I find that the North-South wage differential in construction and extraction occupations is much higher than in any other occupations. I claim that this is because weather affects wage determination. If individuals are to locate in both desirable and undesirable locations, undesirable locations must offer higher wages. Using the O*NET database, I obtain information on how often an occupation requires exposure to weather conditions. Estimation results of the wage equation show that wage compensation for living in bad weather amounts to 11.9 percent of hourly wages evaluated at sample means. The difference in wage compensation for working in bad weather between the most exposed (outdoorness index = 5) and least exposed (outdoorness index = 0) occupations is estimated to be 9.6 percent of hourly wages evaluated at sample means. In addition, I find that the occupational injury risk is related to weather conditions in the case of construction and extraction occupations. / text

nÃo hà / The objective of the present research is to evaluate the relative importance of the Program of Participation in Profits and Results (PPLR) â Law number 10.101, for the commitment of employees in comparison with other factors of functional commitment. Exploratory and descriptive research was conducted, through case studies, with the use of a questionnaire middle structured questionnaire and an interview by topic with managers of PPLR and employees of the administrative, commercial, and operational areas of two large fertilizer companies in Bahia. The research involved two managers and seventy nine employees. The results were analyzed quantitatively and qualitatively. The research allowed to confirm that in spite of the importance of the PPLR for organizational strategies and objectives, there was no agreement between the companies in what it concerns to the prevalence of the Program when related to factors of affective, normative compromising and other calculatives related in the study. It is suggested that several aspects compete for the dissonance among the case studies researched, as the geographical location, demographic subjects and the style of the administration. / A presente pesquisa tem como objetivo avaliar a importÃncia relativa do Programa de ParticipaÃÃo nos Lucros e Resultados (PPLR) â Lei no. 10.101, para o comprometimento dos empregados em comparaÃÃo com outros fatores de comprometimento funcional. Realizou-se uma pesquisa exploratÃria e descritiva, por meio de estudo de caso mÃltiplo, com a aplicaÃÃo de um questionÃrio semi-estruturado e uma entrevista por pauta, junto a gestores dos PPLR e empregados das Ãreas administrativa, comercial e operacional de duas grandes empresas de fertilizantes da Bahia. A pesquisa envolveu dois gestores e setenta e nove empregados. Os dados foram tratados quantitativa e qualitativamente. A pesquisa permitiu constatar que, apesar da importÃncia dos PPLR para as estratÃgias e objetivos organizacionais, nÃo houve consenso entre as empresas pesquisadas no que concerne à prevalÃncia do Programa quando relacionado com fatores de comprometimento afetivos, normativos e demais calculativos relacionados no estudo. Sugere-se que vÃrios aspectos concorrem para a dissonÃncia entre os estudos de caso pesquisados, como a localizaÃÃo geogrÃfica, questÃes demogrÃficas e o estilo da gestÃo.

The thesis is focused on the development of health insurance benefits under the social security system in the Czech Republic. Aiming to secure people for future social events, which may be predictable (age) or unpredictable (disability, funeral, sickness, widowhood, etc.) and prevent poverty or the worst consequences. This thesis briefly describes the system of social security. More specifically focuses on health insurance, health insurance benefits and their development. It also contains the characteristics of the selected business entity and cost analysis of selected companies of employing workers and their absence from work, which is associated with the payment of sickness benefits. Finally, it presents the identification of direct and indirect costs associated with health insurance benefits and their impact on the profit of the selected business entity. The conclusion describes the effect of the payment of health insurance benefits for profit companies, including negative and positive impacts.