Thesis (Ph. D.)--University of Missouri-Columbia, 2005. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (July 18, 2006) Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: Omer R. Galle. Vita. Includes bibliographical references.

Στην παρούσα εργασία διερευνήθηκε η ύπαρξη μισθολογικού πλεονεκτήματος για τους εργαζόμενους-χρήστες του διαδικτύου στην ελληνική αγορά εργασίας. Για τους σκοπούς της ανάλυσης χρησιμοποιήθηκαν διαστρωματικά στοιχεία από την Έρευνα Οικογενειακών Προϋπολογισμών της περιόδου 2004/05 για την ελληνική αγορά εργασίας. Σύμφωνα με τα αποτελέσματα των οικονομετρικών εκτιμήσεων οι χρήστες του διαδικτύου φαίνεται να λαμβάνουν περίπου 7 τοις εκατό υψηλότερες αμοιβές συγκριτικά με τους εργαζόμενους που δεν χρησιμοποιούν το διαδίκτυο. Το αποτέλεσμα αυτό είναι συστηματικό και ισχυρό επιβεβαιώνοντας έτσι τη σχετική βιβλιογραφία. Ειδικότερα το μισθολογικό πλεονέκτημα φαίνεται να είναι ισχυρό ακόμα και στη περίπτωση όπου η οικονομετρική εξειδίκευση είναι διορθωμένη για την πιθανή μεροληψία επιλογής του διαδικτύου από τον ίδιο τον εργαζόμενο. Περαιτέρω εξετάστηκε η ύπαρξη μισθολογικού πλεονεκτήματος από την χρήση του διαδικτύου για τον πρωτογενή, δευτερογενή και τριτογενή τομέα της ελληνικής αγοράς εργασίας. Σύμφωνα με τα αποτελέσματα οι εργαζόμενοι-χρήστες του διαδικτύου, συγκρινόμενοι με τους εργαζόμενους που δεν χρησιμοποιούν το διαδίκτυο, φαίνεται να λαμβάνουν υψηλότερες αμοιβές κατά 6,8 και 7,5 τοις εκατό αντίστοιχα. / In the present study we investigated the existence of the wage advantage for workers, Internet users in the Greek labor market. For purposes of analysis we used cross section data from the Household Budget Survey of 2004/05 for the Greek labor market. According to the results of econometric estimates Internet users seem to take about 7 percent higher wages than workers who do not use the internet. This effect is systematic and robust, thereby confirming the literature. In particular, the wage advantage seems to be strong even in cases where the econometric specification is corrected for possible selection bias of the internet by the worker himself. Further investigated the existence of the wage advantage of internet use for primary, secondary and tertiary sectors of the Greek labor market. According to the results of the workers, Internet users, compared with workers not using the internet seems to get higher wages by 6.8 and 7.5 percent respectively.

Absenteeism is a widely observed phenomenon that has received a great deal of attention from academics who argue that it is an excellent proxy for individuals' attitude to work and commitment to their jobs. Unfortunately, very little of this work has been done by economists. The little economics that has been done has tended to view absenteeism as a measure of the supply of effort. Given the paucity of economic analysis on absenteeism, the psychology, sociology and management literature is reviewed to examine the extent to which their approach and that of an economist have common ground. Upon careful reading, it becomes evident these disciplines offer similar perspectives. Probably the most researched area of absenteeism is the relationship between absence and turnover. Although there is much contention as to what the relationship between these two phenomena should be, most researchers view this as a means to test the hypothesis of withdrawal. This thesis examines the problem somewhat differently and suggests that the approach of much of the empirical work is misguided. An alternative methodology to examine these phenomena is suggested and tested using a very large and detailed database. The results suggest there is a positive correlation between absence and turnover, although the relationship is more complex than described in the literature. One area where economists have made a great deal of theoretical progress is in the examination of why absence might vary across firms. The key insight is that production technology may affect the shadow cost of absence and if the costs of absence differ across firms, then there will be different levels of motivation to reduce it. It is argued that not only will the shadow cost of absence vary across firms, it will also vary over time and a theoretical model is developed to demonstrate this. There is a presumption in the literature that absenteeism is inversely related with the business cycle. However, the empirical work on the subject only models absence as a supply side phenomenon. This introduces a significant identification problem. At the very time when individuals are least likely to go absent, firms' demand for reliable labour will be at its lowest. The empirical work in the chapter models absence from both the supply and the demand side and the findings confirm that both play a significant role in determining absence. The finding that firms' demand for reliable labour may vary through the business cycle is novel and receives further investigation. The data is dissaggregated to determine the robustness of the relationship between demand side factors and the business cycle. At broad levels of disaggregation, the results remain quite strong, although there does appear to be a difference between unionised and nonunionised workers. At finer levels of dissaggregation the results are not as conclusive. This is attributed to the relatively small samples used to derive the individual absence series and the resulting increased volatility that emerges due increased variability from the use of small samples.

Cette thèse a pour objectif d'examiner pourquoi les gros employeurs paient des salaires- plus élevés à des travailleurs similaires employés dans des établissements de taille plus petite quand l'assignation des travailleurs se fait de façon aléatoire. L'objectif principal est de déterminer l'ampleur de l'impact de la taille sur le salaire en présence de sélection et de tester différentes méthodes pour expliquer la relation entre la taille de l'employeur et le salaire. Les objectifs "e cette thèse de doctorat sont multiples. Chaque chapitre amène de nouvelles questions auxquelles le chapitre suivant tente de répondre. De manière générale, tous les chapitres explorent la relation entre la taille de l'employeur et le salaire en présence d'un biais de sélection. Cette question de recherche n'est pas nouvelle en économie du travail, ni les méthodes économétriques utilisées. Cependant, il s'agit d'enrichir cette littérature sur le marché du travail français. En outre, à notre connaissance, les méthodes appliquées dans cette thèse n'ont jamais été utilisées auparavant pour étudier cette question, comme par exemple les méthodes PSM, FIML, pseudo panel etc. / This dissertation aims to explore why large employers pay higher wages compared to similar workers in smaller size establishments in the presence of nonrandom assignment of workers. The main focus is to determine the magnitude of the size-wage impact in the presence of selection and to test various methods to explain employer size and wage relationship. The objectives of the dissertation are multifold. One chapter leaves us with sorne questions and that question becomes motivation for the next chapter. AlI the chapters aim to explore the employer size and wage relationship in the presence of selection bias. This is not a new question in labor economics. The econometric methods are not new either. But this is an addition to the French labor market in this literature. Moreover, the methods applied on this question have not been use d, to our knowledge, before, for example, PSM, FIML, and pseudo panel etc.

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Thesis (Ph. D.)--New School University, 2002. / Includes bibliographical references (leaves 291-302).