The first oral contraceptive was introduced in the United States during the 1960s, and, subsequently, there was an increase in women’s labor force participation rates. Although the economic role of oral contraceptives is still highly debated by scholars, previous studies have found that the pill had a statistically significant impact on women’s labor force participation rates. Using the National Longitudinal Survey of Young Women, I will analyze how hours worked, hourly wages, weekly earnings and occupations for women were affected by oral contraceptives. By controlling for various governing statutes that affected the availability of the use and distribution of oral contraceptives in different states, I am able to provide evidence highlighting the extent of the pill’s significance. I find that early legal access (ELA) to oral contraceptives that resulted from residential states legalizing abortion before others positively and significantly affects women’s hours worked, hourly wages, weekly earnings and whether or not women entered into professional occupations.

The dissertation is comprised of three papers. In the first two Chapters, I analyze the importance of competition, preference heterogeneity, and socio-economic/country-specific factors to explain the differences in penetration rates of mobile phone services across EU Member States. Chapter 1 presents a model of demand and supply for mobile phone services in which products are perceived as homogenous but consumers are heterogeneous with respect to their valuation of the services. Once a service is purchased, consumers (temporarily) leave the market. The parameters which govern the distribution of preferences are allowed to vary by country and will be estimated as part of the demand specification. The model matches the data well and is able to replicate the observed u-shape in the coefficient of variation in penetration rates over the sample period. Using the demand parameters, consumer acquisition costs are backed out and counterfactual experiments performed. I find that preference heterogeneity and differences in the cost of consumer acquisition explain most of the variation in penetration rates across countries. Competition and other control variables, such as the price of fixed-line calls, play only a minor role. In Chapter 2 I relax the assumption that firms are perceived as homogenous and model them as differentiated products. I incorporate endogenous population weights in a standard random coefficients logit model to capture changes in the demographic composition of potential buyers over time due to the (temporary) market exit of adopters. Compared to the results of Chapter 1, I find a larger role of competition and a smaller impact of the (net) cost of consumer acquisition in explaining differences in mobile phone services diffusion. In the third Chapter, I analyze the effect of a product introduction on labor supply. I demonstrate that it is possible to overcome many of the limitations associated with the lack of individual level purchase data by focusing on teenage labor supply and the introduction of video game consoles. I find that 16- to 17-year old male teenagers significantly increase their hours of work in the months prior to video console introductions beyond the usual male-female difference.

The first essay studies the long term trend of internal migration in the United States. Over the last forty years, there has only been a modest change in the overall interstate migration rate in the United States. However, different demographic groups have seen very different patterns of changes. The migration rate for families with two college graduate spouses dropped from 5.66% in 1965-1970 to 2.82% in 2000-2005. As for the families with college-graduate husband, it dropped from 4.05% to 2.15% during the same time frame. Interstate migration rates for other types of families or singles have seen little change. This paper extends Mincer’s family migration model into a search framework and directly estimates the effects of female labor force participation, spousal earnings ratio, correlation of earnings from job offers, and home ownership on the migration propensity by using the Current Population Survey (CPS) data in the period of 1982-2005. Endogeniety issues of these variables are appropriately addressed. According to the Blinder-Oaxaca decomposition analysis, we find that the increasing female labor force participation rate and earnings ratio of wife to husband are the primary determinants for the decline in the interstate migration rate of families with two college-graduate spouses and families with a college-graduate husband in the 1980s-1990s. The rising home ownership accounts for a large portion of the decrease in the migration rate of highly educated families, in the 1990s-2000s. The second essay studies the impact of changing youth cohort size on the unemployment rate. Although an increase in youth cohort size is often found to exert an upward pressure on the aggregate unemployment rate, it has been provided some empirical evidences and a theoretical model to the contrary. We find that the estimated elasticity of unemployment rate is quite sensitive in a fixed effect model, with the inclusion of year dummies, when there is a strong temporal correlation between the youth cohort size and the unemployment rate. Both the sign and magnitude of the estimates vary significantly when using data from different time periods. We propose an alternative way to control for the fixed effects and obtain consistent estimates across the time periods in the United States. Our results support the conventional wisdom of positive correlation between youth cohort size and aggregate unemployment rate. This positive effect of the youth cohort size is strongest for the youngest workers and gradually diminishes for older workers, which implies that the young and the prime age workers are not perfect substitutes to the employers.

This article looks at the effect of culture on female labor force participation. Proxies of culture used are Globe cultural social practice dimensions, and Hofstede cultural dimensions. This article finds that globe cultural dimensions have a stronger explantory value that Hofstede cultural dimensions. It confirms that gender eglaitarianism is a predictor of female labor force participation. It also suggests that assertiveness and uncertainty avoidance are also predictors of female labor force participation.

Previous work found evidence that the racial composition of NBA teams was positively correlated with the racial composition of their metropolitan market areas during the 1990s. This paper finds continued evidence of this relationship in the 2000s, with an accompanying attendance boost from the incorporation of white players on teams located in whiter areas. There is also evidence that white players receive a salary premium relative to black players of equal performance quality. An examination of player performance indicates that demand for foreign players with the skill set of a forward or center is higher than demand for players of equal quality from the U.S. However, an analysis of salary discrimination related to foreign players produced no conclusive evidence.

This study seeks to analyze the changes in the effects of determinants of earnings inequality and their labor market implications in urban China from 1988 to 2002. It analyzes urban individual data from the 1988, 1995, and 2002 surveys of the China Household Income Project by studying its inequality measures and summary statistics, and by conducting an ordinary least squares regression, quantile regression, and regression-based decomposition analysis. It finds that the labor market has indeed been rewarding human capital variables, in which age and work experience, which are related to seniority, have been decreasing in their contribution to earnings inequality, whereas education and skill-based occupation have been increasing their contributions to earnings inequality. In addition, the labor market has become more discriminatory in terms of gender, which has increased its contribution to earnings inequality, and less discriminatory in terms of minority status and Communist party membership, which have decreased their contributions to earnings inequality. The labor market has also become more segmented in terms of work unit sector, which has increased its contribution to earnings inequality, but has also become less segmented in terms of ownership, which has actually started to contribute to earnings equality. These observations show that urban China’s labor market has been becoming more market-oriented and has been progressing overall, except for its increasing gender discrimination and segmentation by sector.

This thesis examines firm performance through the dot-com bubble through the lens of executive compensation. Hypotheses based on the theoretical literature of Bolton, Scheinkman and Xiong (2006) as well as Bertrand and Mullainathan (2001) in regards to management compensation in a speculative bubble motivate three regression models with differing market-cap-growth based dependent variables and specific compensation variables. Regression analyses test the models using public compensation and security data from S&P's Execucomp and Compustat databases. Synthesizing regression results show that stock option vesting schedules and executives' status on the board of directors may significantly affect firm performance through the dot-com bubble, but more analysis, using more robust data, is necessary to verify either claim.

This paper studies a sample of CEOs from companies listed in the Dow Jones Industrial Average from 1992 to 2010, and confirms the theory that board members rely more heavily on firm performance measures for turnover and compensation decisions when less is known about the CEO’s ability. In this paper, I make two contributions to the literature. First, I confirm the empirical findings of literature with a new data set showing that the effect of firm performance on CEO turnover declines over a CEO's tenure. Second, I introduce a new tool, the relationship between CEO compensation and firm performance, for testing the effects of CEO tenure on board member decisions. The evidence indicates that the relationship between firm performance and CEO compensation declines over a CEO's tenure. Collectively, the results of this paper support the theory that board members gradually learn the CEO's ability over his tenure, therefore their decisions for turnover and compensation depend more on firm performance for a new CEO.

The dissertation is comprised of three papers. In the first two Chapters, I analyze the importance of competition, preference heterogeneity, and socio-economic/country-specific factors to explain the differences in penetration rates of mobile phone services across EU Member States. Chapter 1 presents a model of demand and supply for mobile phone services in which products are perceived as homogenous but consumers are heterogeneous with respect to their valuation of the services. Once a service is purchased, consumers (temporarily) leave the market. The parameters which govern the distribution of preferences are allowed to vary by country and will be estimated as part of the demand specification. The model matches the data well and is able to replicate the observed u-shape in the coefficient of variation in penetration rates over the sample period. Using the demand parameters, consumer acquisition costs are backed out and counterfactual experiments performed. I find that preference heterogeneity and differences in the cost of consumer acquisition explain most of the variation in penetration rates across countries. Competition and other control variables, such as the price of fixed-line calls, play only a minor role. In Chapter 2 I relax the assumption that firms are perceived as homogenous and model them as differentiated products. I incorporate endogenous population weights in a standard random coefficients logit model to capture changes in the demographic composition of potential buyers over time due to the (temporary) market exit of adopters. Compared to the results of Chapter 1, I find a larger role of competition and a smaller impact of the (net) cost of consumer acquisition in explaining differences in mobile phone services diffusion. In the third Chapter, I analyze the effect of a product introduction on labor supply. I demonstrate that it is possible to overcome many of the limitations associated with the lack of individual level purchase data by focusing on teenage labor supply and the introduction of video game consoles. I find that 16- to 17-year old male teenagers significantly increase their hours of work in the months prior to video console introductions beyond the usual male-female difference.

Thesis (M. Soc. Sc.)--University of Hong Kong, 1984.