Social Entrepreneurship and Regional Economic Development: The Case of Social Enterprise in South Korea

: Although many discussions of regional economic development have been made to this day, the regional economic development sector is constantly looking for new models to address the many challenges of each region in a sustainable way. This study aims to empirically examine the relationship between social entrepreneurship and regional economic development, focusing on government-driven social enterprises in South Korea. I conduct an exploratory study of government support for social enterprises in South Korea at the local and central government level and empirically examine the relationship between social entrepreneurship and regional economic development by using time sequential panel data collected over an eight-year period from 2007 to 2014. Results from panel regression (ﬁxed-e ﬀ ect and random-e ﬀ ect) models indicate that social entrepreneurship measured as the number of government-driven social enterprises has a positive relationship with regional economic development. As claimed in numerous previous studies on regional economic development, the ﬁxed-e ﬀ ect regression results of this study also indicate that physical capital, human capital, knowledge capital, and entrepreneurship are all signiﬁcant and important factors shaping regional economic output. The results of this study suggest a new direction for policy that focuses on instruments to promote social entrepreneurship. Thus, governments of each region need to make e ﬀ orts to promote job creation in social enterprises because they possess the ability to e ﬃ ciently respond to the immediate needs of local social enterprises. These government-driven social enterprises can contribute to regional economic development through creating new jobs in South Korea.


Introduction
This study aims to empirically examine the relationship between social entrepreneurship and regional economic development, using data on certified social enterprises in South Korea. For this purpose, research models were developed by first examining theoretical discussions on social entrepreneurship and regional economic development.
In response to the global financial crisis of 2008 and its impact on the economy, many countries increased their spending in order to promote economic growth and sustainable economic development. However, increased government spending caused massive financial deficits in many countries. Each country carried out multifaceted efforts to resolve massive financial deficits caused by increased government spending in the process of overcoming fiscal and financial crises [1][2][3]. Nevertheless, the measures taken, based on two extreme (dichotomous) approaches of existing state-led and market-driven methods, instigated market and government failures and led to heavy questioning This paper is structured as follows. The next Section reviews the literature on social economy, social entrepreneurship, social enterprise, the relationship between social entrepreneurship and regional economic development, and social enterprise policy initiatives implemented by the Korean government. The third Section explains the data, variables, and method for the empirical analysis. After interpreting the empirical results, we conclude with a discussion and list of policy implications.

Social Economy, Social Entrepreneurship, and Social Enterprises
Since the rise of the social economy has been recognized in political, economic, legal, administrative, and other circles, 'social economy' has become a useful term for academics and researchers. According to Spear (2013), "the social economy is typically understood as a family of different types of organizations: co-operatives, mutuals, associations, and foundations (CMAF)" [10: 8]. The social economy plays an important role in assisting the most disadvantaged in society in many countries. It has been expected to present a new alternative to government-provided public service initiatives and to contribute to resolving social issues such as unemployment and poverty [15][16][17].
In the social economy, active participation of social entrepreneurs has become increasingly important for social and economic development through the expansion of welfare service provisions and the creation of new jobs [18,19]. Social entrepreneurs have the capabilities and temperament for a set of exceptional behaviors. Since social entrepreneurs are searching for innovative solutions to meet new social needs and to develop a new response to social challenges, social entrepreneurship is often associated with social innovation [20][21][22]. Although the initiatives of social entrepreneurs result in the establishment of various kinds of innovative organizations, social enterprise can be seen as a general form of economic organization operating within the social economy [7,23,24] and it refers to one of the tangible outcomes of social entrepreneurship.
Many studies and discussions about social enterprises have taken place along with their rapid growth. However, despite the existence of research highlighting the cross-sectoral nature of social enterprise, scholars have conflicted over its definition [25][26][27][28]. This is largely due to the fact that social enterprise in each country has developed from different origins and in a different manner, thus creating a wide range of models [29,30]. Although it is difficult to clearly define a social enterprise, most scholars have generally agreed that a social enterprise denotes an economic agent that pursues public interest objectives of production and supply of social services, as well as the traditional corporate objective of maximum profit at the same time [31][32][33][34]. In other words, social enterprise can be viewed as economic entities creating social and economic value within the social economy [23,35,36]. Thus, a social enterprise is regarded as a hybrid between nonprofit organizations pursuing social goals and businesses pursuing economic goals [18,19,37] or a hybrid providing state services [30,38,39].
The OECD broadly defines a social enterprise as an organization established based on entrepreneurship to pursue social and economic objectives, which, in a narrower sense, promotes regional economic development by re-integrating the labor market through training of the poor and by consuming the products and utilizing services produced in the process [40]. Defourny (2001) explains the concept of social enterprise separately in terms of both economic and social dimensions [25]. He explains that a social enterprise, in the economic sense, should take some level of risk while continuously producing or selling goods and services, have a high degree of autonomy, and retain a minimum number of paid workers. He also describes that in the social sense, a social enterprise is formed based on citizens' voluntary participation; its decision-making authority should not be determined based on ownership of capital; parties affected by the social enterprise's activities should be able to participate in decision-making; and profit sharing should be limited. In this perspective, a social enterprise, unlike private companies, has public interest, and its concept of social enterprise is also clearly distinct from that of the social responsibility of corporations.
It has been said that social enterprises emerged as an alternative to resolve market and government failures [14]. In other words, it can be said that out of the three sectors of the economy, a social enterprise performs broad activities within the spectrum of the social economic sector, which is the third sector that has the properties of the first sector-public area (state)-and the second sector-private area (market). Therefore, it can be said that social enterprise seeks to achieve social goals through commercial activities [18,19,37,[41][42][43] and plays a key role in providing the state services [38,39].
However, countries in Europe do not subscribe to this model and view both the third and fourth sectors as the social economic area. According to scholars who advocate a fourth sector distinct from the third (e.g., [44][45][46][47][48][49], the third sector represents citizen groups and non-government, non-profit organizations; whereas the fourth sector is defined as a new collective organizational model that simultaneously seeks profit and public interests, and combines the existing sectors to resolve social issues. These scholars include social enterprises in the fourth sector and suggest that social enterprise is an important economic agent that functions within the fourth sector. In addition, Williams (2008Williams ( , 2010 presents the fourth sector as an area for non-official, volunteer activities and a form of citizen participation culture that can supplement the public activities of the third sector [44,45]. Jimenez and Morales (2011) also argue that it is a collective sphere that combines public, private, and civic sectors for the purpose of resolving social issues, and economic agents like social enterprises, cooperatives, and township enterprises are main constituents of the fourth sector [48].
Taken together, social enterprise is an important form of economic organization working within the social economy. Each country's government exerts multifaceted efforts to meet social service needs through vitalization of social enterprises, although the contents and methods of support differ by country [50][51][52].

Social Entrepreneurship and Regional Economic Development
Recent entrepreneurship literature has emphasized the innovative capacity of social entrepreneurs as new actors for social and economic development [20]. Thus, social entrepreneurship is an important factor for the development of the social economy and contributes to regional economic development. For example, social economy organizations are often the biggest employers in the area of economic crisis in East Germany; in fact, the organizations are some of the most important actors for regional economic development in almost all European crisis regions [53]. Therefore, the significance of social entrepreneurship for keeping some such thing as a locality or community alive has been emphasized in terms of regional economic development [53].
It is clearly not easy to identify the main actors in the social economy because of the marked diversity of national realities concerning the concepts and the level of recognition of the social economy [9]. Nevertheless, it can be said that nowadays, the organizations that represent the social economy in Europe are cooperative family, family of mutual societies, family of associations and social action organizations, and platforms for social enterprises [9]. These organizations can contribute to the creation of jobs and entrepreneurial ventures in disadvantaged regions [11]; therefore, they can have an influence on regional economic development.
As mentioned above, social enterprise can be seen as a general form of economic organization operating within the social economy [7,23,24] and it refers to one of the tangible outcomes of social entrepreneurship, although the initiatives of social entrepreneurs result in the establishment of various kinds of innovative organizations. The presence of social enterprises in regions where public services are poor or lacking is particularly important because it provides social services or jobs to the socially underprivileged while producing and selling goods and services; promotes social values that are difficult to provide through the market mechanism; and retains the attributes and profit-driven nature of a corporation and social nature that seeks to fulfill public interests [11]. Social enterprises seek to add to regional economic development through the creation of jobs and entrepreneurial ventures in disadvantaged regions. By helping to improve the overall skills of a local workforce, reducing inequalities in access to health and social care services, constructing good-quality housing for those living in sub-standard conditions, reducing social exclusion for the unemployed, creating wealth and adding benefits due to a multiplier effect, improving labor productivity due to skills investment, increasing tax revenues while reducing welfare payments, and enabling community-led rejuvenation and renewal, social enterprises can also provide economic development benefits to poor regions [54]. Thus, social enterprise was expected to present itself as one of the new alternatives to expand welfare service provisions, creation of new jobs, and reduction of unemployment and poverty in such regions through stimulating the social economy and ultimately achieving sustainable regional economic development [4][5][6][7][8][9][15][16][17]23,24]. Recent data from CIRIEC (2012) actually show that the social economy actors including social enterprise have increased their share of employment within Europe [55]. For this reason, some countries like South Korea have promoted supporting social enterprises and have increased the budget to provide social enterprises with financial and managerial support. The social enterprise of South Korea is a typical case of government-driven social enterprise because it has grown under the benefits of government-led development policies, mainly represented by government certification and support towards personnel expenses. In addition, infrastructure access, information, consultancy, and technical support are available for the certified social enterprises in South Korea.
In general, improvement in the efficiency of resource allocation, equity through redistribution, economic stability, and growth accomplishment can be considered as bases for government intervention in the private sector's economic activities [56]. Each government's active financial support of social enterprises can be interpreted as a pursuit of equity through redistribution and economic stability and development. For example, the Korean government actively fostered social enterprises in order to seek equity through redistribution by providing social services to the underprivileged, and to pursue sustainable economic development through regional economic vitalization by providing sustainable jobs, thereby promoting job creation and increased employment. The increase in employment and job creation represents economic stability. Since Korea's 1997 financial crisis, job creation and increased employment were imperative to alleviating the economic downfall at hand, so a fundamental goal for creating a comprehensive policy was in place. Based on the aggressive funding of social enterprise, it is possible to infer that the Korean government has regarded the objective of job creation as highly important.
Another way for evaluating the government's financial support for social enterprises is by measuring improvement in the efficiency of resource allocation. Identifying the two axes that make up modern society as the market and the government, we can say that efficient allocation of resources is primarily the responsibility of the market. Government interventions to achieve efficient resource allocation are justified only when the market fails to do so-that is, when a market failure occurs [57][58][59]. In this respect, the socially disadvantaged would be unable to obtain decent employment and continue to be placed in vulnerable situations, if their employment is determined solely by the market. Therefore, the government seeks to enhance equality by providing various welfare benefits to the socially disadvantaged through income redistribution policies. However, it is necessary to ultimately inspire the socially disadvantaged to desire to work and be independently active in the market. It is difficult, practically, for the government of a welfare state to afford the continually increasing costs of welfare in the face of a crisis. Hence, vitalization of social enterprises that can provide the socially disadvantaged with sustainable employment and social services at the same time can be an essential alternative for the government. In the case of Korea, such legitimacy of government intervention became the basis for state-led support for social enterprises, and as a result, enabled a rapid quantitative growth in a short time through certification and labor cost support. Moreover, the method of supporting labor costs was a practical way to recruit talent for the immediate implementation of certain projects and became the most powerful force behind the integration of labor among the underprivileged, development of social service providers, and the creation of jobs [60].
However, a social enterprise can also be regarded as a social venture that is operated based on the principles of profit generation and innovation typical of general for-profit corporations, while at the same time pursuing the social objectives of alleviating social problems and market failures or creating social values. Therefore, a social enterprise utilizes creative entrepreneurship, innovation, and market principles to create social values and encourage social changes. Considering these perspectives, the government's direct financial support for social enterprises, such as the support for labor costs, may contribute to job creation and social service provision through the establishment and maintenance of social enterprises in the short term. In the long term, though, it could act as a hindrance to the development of social enterprises or distort the fundamental attributes of a social enterprise. Under such conditions, it is difficult to promote independence and autonomy of social enterprises and the development of diverse social enterprises may also be inhibited. Sustainability issues have also been shown to exist for less competitive social enterprises, as most social enterprises have scaled down on employment once support for personnel expenses expired, while others disposed of their assets or even closed business. Despite these issues, there is a general consensus that financial support, such as support for personnel expenses, enables the establishment and maintenance of social enterprises in the short term, thereby contributing to job creation and regional economic development [4,27,[32][33][34]61].
South Korea's support policy for social enterprises is expected to promote the quantitative and qualitative development of social enterprises and ultimately contribute to regional economic development. To corroborate such theoretical arguments, an empirical study on whether social enterprises are actually contributing to regional economic development is needed. So far, there are virtually no previous studies available.
Based on the limitations of previous studies and the above discussion, this study seeks to answer the following research question. Social entrepreneurship is a vital factor for promoting regional economic development and therefore I asked, "what effect does social entrepreneurship have on regional economic development?" Thus, this study addresses the following two hypotheses: Hypothesis 1 (H1). Regional economic development is positively affected by social entrepreneurship.

Hypothesis 2 (H2).
After controlling physical capital, human capital, knowledge capital, and entrepreneurship, social entrepreneurship has a positive impact on regional economic development.
This study uses a model to investigate the relationship between government-driven social enterprises and regional economic development. Before moving on to specific analyses of the relationship, support policies and the general status of social enterprises in Korea will be briefly examined below.

Social Enterprise Policy in South Korea
In Europe, interest towards social enterprises-along with the trend of privatization of social welfare and job creation-began to rise in the 20th century. In South Korea, on the other hand, the government did not begin to actively promote the expansion of social services and job creation until the 1997 financial crisis. At that time, it did so in an effort to overcome the economic crisis, to resolve social welfare problems, and to promote economic development [52]. The government's increased interest and investment in this area can be clearly seen in data from the years following that crisis: A budget of about 7.3 million US dollars created approximately 2000 social enterprise jobs in 2003, and a budget of about 1.3 billion US dollars created approximately 162,000 jobs in 2011 [62]. In other words, to overcome the economic crisis, to provide social welfare services, and to promote economic development in regions where public services are poor or lacking, the Korean government introduced the social enterprise model as an alternative. It even enacted a special 'Social Enterprise Promotion Act' in 2007.
With rapid aging and the dismantling of the traditional family structure, public demand for social services rapidly increased. Under the government's lead, certification of social enterprises began, and starting in August 2012, revised statutes of the 'Social Enterprise Promotion Act (SEPA) of 2007 were implemented. Financial and operational support was provided to certified social enterprises.
In December 2012, the Social Enterprise Promotion Agency was established. In addition to central government support, an 'ordinance on standards for social enterprise development support' was enacted to encourage local governments to enact ordinances to foster and support social enterprises at the regional level. By planning for quality improvement in certification services and supporting fair certification screening, the Korea Social Enterprise Promotion Agency (KoSEA) contributes to the expansion and invigoration of social enterprises. Figure 1 shows procedure for certification of social enterprises in South Korea. As activities of government-driven social enterprises are generally based on local governments' administrative districts, the enforcing agency was changed from the central government to local governments [11]. Hence, the central and local governments have been providing various types of support to social enterprises based on the SEPA and other relevant laws and ordinances. The Labor Department in particular aims to foster approximately 3000 social enterprises by 2017.
According to the revised SEPA, a social enterprise is a corporation that pursues social objectives, such as enhancing the quality of life of local residents, by providing social services or employment opportunities to the underprivileged or contributing to the local community, while simultaneously producing and selling goods and services that meet appropriate requirements and have been certified. The Korea Social Enterprise Promotion Agency provides specific examples of underprivileged groups, such as low-income individuals, the disabled, victims of sexual trafficking, the elderly, those who have been unemployed for a long period, and women who have taken a career break. Thus, a social enterprise in South Korea is different from that of Europe or other countries in terms of concept, characteristics, and function. Specifically, social enterprises in South Korea, unlike in other countries, have grown under the benefits of government-led development policies, mainly represented by government certification and support towards personnel expenses. Figure 2 roughly shows South Korea's development policy for social enterprises. As activities of government-driven social enterprises are generally based on local governments' administrative districts, the enforcing agency was changed from the central government to local governments [11]. Hence, the central and local governments have been providing various types of support to social enterprises based on the SEPA and other relevant laws and ordinances. The Labor Department in particular aims to foster approximately 3000 social enterprises by 2017.
According to the revised SEPA, a social enterprise is a corporation that pursues social objectives, such as enhancing the quality of life of local residents, by providing social services or employment opportunities to the underprivileged or contributing to the local community, while simultaneously producing and selling goods and services that meet appropriate requirements and have been certified. The Korea Social Enterprise Promotion Agency provides specific examples of underprivileged groups, such as low-income individuals, the disabled, victims of sexual trafficking, the elderly, those who have been unemployed for a long period, and women who have taken a career break. Thus, a social enterprise in South Korea is different from that of Europe or other countries in terms of concept, characteristics, and function. Specifically, social enterprises in South Korea, unlike in other countries, have grown under the benefits of government-led development policies, mainly represented by government certification and support towards personnel expenses. Figure 2 roughly shows South Korea's development policy for social enterprises. The support for social enterprises in Korea can be separated into the central government and the local government levels as follows. At the central government level, certified social enterprises are provided with management support, training support, facility cost support, priority purchase for public agencies, tax exemption, social insurance premium assistance, funding for social-serviceproviding enterprises, and employment liability exemption and tax reduction for affiliated companies. At the local government level, with some variation by logicality, various policy efforts are made to help region-based preliminary social enterprises meet the certification requirements at an early stage by providing management consulting, personnel expenses for new and professional recruitments, business development costs, priority purchases, and pro bono assistance. In addition, organizations such as the Korea Business Council of Social Enterprise, Work Together Foundation, Korea Foundation for Social Investment, and Social Solidarity Bank, provide support at the national level while social enterprise support centers of metropolitan municipalities or primary local governments provide assistance at the local level.
Although central and local governments provide a wide variety of support to certified social enterprises and region-based preliminary social enterprises, a majority of the associated budget is allocated for personnel expenses for creating jobs [11,52]. This trend has existed since support for social enterprises began, as they were aggressively fostered to alleviate unemployment and to provide decent employment opportunities to the underprivileged. Currently, the social enterprise development policies for both the central and local governments are focused on how many jobs will be created and on promoting regional economic development through future job creation. It implies that social enterprises are gaining attention as a viable means of job creation in an era of rising unemployment.
In South Korea, certification status is a particularly important element, considering the country's unique government-led development process by way of certification and personnel expense assistance. According to a study by Kim and Lee (2012a) [11], in the early phase of certification, a high The support for social enterprises in Korea can be separated into the central government and the local government levels as follows. At the central government level, certified social enterprises are provided with management support, training support, facility cost support, priority purchase for public agencies, tax exemption, social insurance premium assistance, funding for social-service-providing enterprises, and employment liability exemption and tax reduction for affiliated companies. At the local government level, with some variation by logicality, various policy efforts are made to help region-based preliminary social enterprises meet the certification requirements at an early stage by providing management consulting, personnel expenses for new and professional recruitments, business development costs, priority purchases, and pro bono assistance. In addition, organizations such as the Korea Business Council of Social Enterprise, Work Together Foundation, Korea Foundation for Social Investment, and Social Solidarity Bank, provide support at the national level while social enterprise support centers of metropolitan municipalities or primary local governments provide assistance at the local level.
Although central and local governments provide a wide variety of support to certified social enterprises and region-based preliminary social enterprises, a majority of the associated budget is allocated for personnel expenses for creating jobs [11,52]. This trend has existed since support for social enterprises began, as they were aggressively fostered to alleviate unemployment and to provide decent employment opportunities to the underprivileged. Currently, the social enterprise development policies for both the central and local governments are focused on how many jobs will be created and on promoting regional economic development through future job creation. It implies that social enterprises are gaining attention as a viable means of job creation in an era of rising unemployment.
In South Korea, certification status is a particularly important element, considering the country's unique government-led development process by way of certification and personnel expense assistance. According to a study by Kim and Lee (2012a) [11], in the early phase of certification, a high percentage of organizations transitioning into social enterprises were ones that started in the job creation project  Table 1 indicates the annual status of applications, certification rates, and maintenance rates since 2007 when the certification program was implemented.

Empirical Model: Regional Economic Development Model
Quite a number of theoretical discussions of regional economic development have been made to this day. In particular, the arguments made by a variety of social scientists, including economists, state that physical capital, human capital, knowledge capital, and entrepreneurship are important factors in regional economic development [65].
Physical capital, as emphasized from the primitive age to the information society of the modern era, is a fundamental element of personal and social development and economic growth. Human capital has developed as an important factor along with physical capital as the creative ideas of humans began to gain property value with the maturation of industrial society. Highlighting this, neoclassical economic growth theorists such as Robert Solow (1957) [66], advocated the diminishing marginal product of capital and labor and stressed the qualitative and quantitative enhancement of human and physical capital.
Endogenous growth theorists, such as P.M. Romer (1986) [67] and R. Lucas (1998) [68], advocated the importance of knowledge and changes in technology and attempted to explain a portion of the Solow residual-the part of growth that cannot be explained by capital accumulation or increased labor input. New knowledge creation and transfer through R&D investments are important for innovation and economic development. Scholars like T.W. Schultz (1967) [69] and G.S. Becker (1975) [70], who stressed the importance of human capital, claimed that the accumulation of human capital through education ultimately contributes positively to sustainable economic development and tried to explain another portion of the Solow residual. Moreover, they stated that innovation through entrepreneurship (as measured by new firm formation) is an essential factor that can lead to sustainable economic development and explain a certain portion of the Solow residual. Over the years, a variety of arguments have been put forth to address this issue. Each government, irrespective of country, has been accounting for regional and local factors that affect entrepreneurship. This is because entrepreneurship has been regarded as one of the important drivers of sustainable economic development and growth in this current knowledge-based economy [71][72][73][74].
The belief that social entrepreneurship can enable local communities to resolve their own issues and integrate underprivileged groups into the community is even more strongly held in the new governance era of today. In particular, each government puts great importance on the potential contribution of social enterprises towards economic development, as the third sector contributes to the creation of social and economic values through many kinds of activities [23,35,36]. Thus, this study examines the relationship between the level of regional economic development and social entrepreneurship (as measured by the number of social enterprises), focusing on government-driven certified social enterprises in each region. For this, the level of regional economic development is used as a dependent variable and the number of certified social enterprises in each region as an explanatory variable. Additionally, physical capital, human capital, knowledge capital, and entrepreneurship that may have an influence on regional economic development are used as control variables.
The physical capital, human capital, knowledge capital, and entrepreneurship, used as controls in this study, are variables that are chiefly used to describe regional economic development. Numerous existing studies have used values or ratios representing the natural logarithm of each variable. Thus, this study used natural logarithm values for physical capital, human capital, knowledge capital, and entrepreneurship.
This study examines the relationship between social entrepreneurship and regional economic development by using time-sequential panel data collected over an 8-year period from 2007 to 2014. In the course of the panel regression analysis, both a fixed-effect model and a random-effect model were used to interpret results and determine which model is more appropriate. Before exploring the relationship between social entrepreneurship and regional economic development by the panel regression analysis, this study also analyzes the relationship between social entrepreneurship and regional economic development by the pooled regression model. Equations (1) and (2) below indicate the pooled and panel regression analysis models used in this study. Using a specification of the Cobb-Douglas production function type generally used in previous empirical studies on regional economic development, this study augments a production function with social enterprise.
In Equations (1) and (2), Y i indicates the level of economic development of region i, and SE it represents social entrepreneurship measured as the number of certified social enterprise in region i during period t. β 1 represents the estimated coefficient values of regional certified social enterprise variables in the model; that is, an increase of the regional certified social enterprise variable by one percent correspondingly increases the left-hand side (regional economic development) by β 1 percent. β 2 , β 3 , β 4 , and β 5 represent coefficient values of physical capital, human capital, knowledge capital, and entrepreneurship, respectively. Because the level of regional economic development can be affected by regional characteristic variables as well as regional social enterprise, this study includes physical capital, human capital, knowledge capital, and entrepreneurship as control variables in the model. Finally, ε it represents the error term.

Data and Variables
The key variable for this study is government-driven certified social enterprises funded by central and local governments in South Korea. The Korean government started to support social enterprises with public funding in 2007. This study explores the relationship between government-driven certified social enterprises and regional economic development from 2007 to 2014. Due to the limitations in obtaining data, this study uses the data on the certified social enterprises generated by the Ministry of Employment and Labor of Korea in recent years.
The temporal scope of this study is from 2007, when certification of social enterprises began, up to the end of 2014. In this study, the analysis of the relationship between government-driven social enterprise and regional economic development centers around the period between 2007 and 2014. The spatial extent of this study is nationwide, including 16 key metropolitan region-levels.
Indicators for the other basic variables were drawn from a variety of sources. To collect data on other indicators that are not covered by the Ministry of Knowledge Economy of South Korea, this study uses data on gross regional domestic product per capita, gross fixed capital formation, human capital, knowledge capital, and entrepreneurship from the Korea National Statistical Office. For ease of reference, the basic variables are summarized in Table 2, which also shows a brief description and the data source of each variable. Table 2. Brief description of variables and data sources.

Variables
Brief Description Data Sources

Regional Economic Development
Natural log value of Gross Regional Domestic Product per Capita

Descriptive Statistics
Before exploring the relationship between social entrepreneurship and regional economic development, this study discusses the descriptive statistics regarding the regional characteristic variables such as physical capital, human capital, knowledge capital, entrepreneurship, and social entrepreneurship as well as regional economic development. Table 3 summarizes descriptive statistics regarding the characteristics of each variable included in empirical models for regional economic development based on pooled data analysis and panel data analysis.  On the one hand, Table 3 shows overall descriptive statistics of each variable, where we can see that 16    Note: The number in parentheses (S.D.) represent standard deviation.
On the one hand, Table 3 shows overall descriptive statistics of each variable, where we can see that 16 regions, analyzed over a period of 2007-2014, have mean regional economic development   Data on GDP per capita and the number of social enterprises statistics that are spatially referenced has allowed a better understanding of the geography of different GDP per capita values and the number of social enterprises. If we look at map (A), map (B), map (C), and map (D), we can identify patterns and trends of the number of social enterprises and GDP per capita based on location. These four maps are data driven and use rules based on a number 'attribute' such as social enterprise or GDP per capita in order to style each feature. Each feature in the maps in Figure 3 is color coded based on GDP per capita and the number of social enterprises. In Figure 3

Regression Results: Pooled OLS Regression Resutls and Panel Regression Results
This study conducted a regression analysis using panel data to examine whether there is any relationship between the increase in the natural log value of the number of certified social enterprises and the level of regional economic development. A pooled OLS regression model, fixed-effect model, and random-effect models were used in this study. Table 4 presents specific results of the regression analysis on regional economic development. Data on GDP per capita and the number of social enterprises statistics that are spatially referenced has allowed a better understanding of the geography of different GDP per capita values and the number of social enterprises. If we look at map (A), map (B), map (C), and map (D), we can identify patterns and trends of the number of social enterprises and GDP per capita based on location. These four maps are data driven and use rules based on a number 'attribute' such as social enterprise or GDP per capita in order to style each feature. Each feature in the maps in Figure 3 is color coded based on GDP per capita and the number of social enterprises. In Figure 3

Regression Results: Pooled OLS Regression Resutls and Panel Regression Results
This study conducted a regression analysis using panel data to examine whether there is any relationship between the increase in the natural log value of the number of certified social enterprises and the level of regional economic development. A pooled OLS regression model, fixed-effect model, and random-effect models were used in this study. Table 4 presents specific results of the regression analysis on regional economic development. According to regression results of Model (1) in Table 4, social entrepreneurship has a negative (−), statistically insignificant, effect on GDP per capita (−0.0395) at the 0.05 level. Among control variables, physical capital, human capital, and entrepreneurship have positive (+), statistically significant, effects on GDP per capita, however, knowledge capital has a negative (−), statistically significant, effect on GDP per capita at the 0.05 level. Regression results of Model (1) in Table 4 are not in line with those of previous empirical studies on regional economic development.
For a pooled OLS model to be accurate, some assumptions need to be tested, including no serial correlation, homoscedasticity, and no cross-sectional dependence. Thus, this study implemented the 'Wooldridge test' for serial correlation in panel data because the test requires relatively few assumptions and is easy to implement [75][76][77]. After employing the Wooldridge test, we found that the null hypothesis of no serial correlation is strongly rejected (F = 57.081, Prob > F = 0.0000). Also, the output from the first-differenced regression includes standard errors that account for clustering within the panels, therefore other estimators are needed to produce more efficient estimates.
For other estimators in this study, both fixed-effect and random-effect models were used for the regression analyses using panel data, and a Hausman Test was conducted to determine which model was more appropriate. Table 4 presents specific regression results of Model (2) and Model (3). Table 4, in the fixed-effect model (Model (2)), the value of the regression coefficient for regional social entrepreneurship measured as the number of social enterprises indicates statistical significance at the 0.01 level, implying that an increase in the natural log value of the number of regional certified social enterprises has a positive (+) impact on regional economic development. As claimed in numerous previous studies on regional economic development (i.e., [64][65][66][67][68][69][70][71][72][73], the regression coefficient values of variables like physical capital, human capital, knowledge capital, and entrepreneurship show statistical significance at the 0.05 level, indicating these variables are positively relevant to regional economic development.

As indicated in
Looking next at the random-effect model (Model (3)), the value of the regression coefficient for regional social entrepreneurship also indicates statistical significance at the 0.01 level, implying that an increase in the natural log value of the number of regional certified social enterprises has a positive (+) impact on regional economic development. Moreover, the regression coefficient values of variables like physical capital, human capital, and knowledge capital, but not entrepreneurship showed statistical significance at the 0.05 level, indicating these variables have a positive (+) impact on regional economic development. However, the regression coefficient values of the entrepreneurship variable indicated no statistical significance at the 0.05 level.
A Hausman Test was conducted to determine which of the two models-fixed-effect model or random-effect model-was more appropriate, and the value of χ 2 at 344.12 was found to be statistically significant at the 0.01 level, indicating the fixed-effect model to be more appropriate. In other words, the result of the Hausman Test shows that we can reject the null hypothesis, which implies that there is no correlation between the error term and the regressors. Thus, we can decide that fixed-effect model is preferred.
Previous studies on entrepreneurship (i.e., [65,78]) suggested the importance of the link of entrepreneurship to regional economic performance by using a production function model including several different measures of entrepreneurship. As claimed in numerous previous studies on regional economic development, the regression coefficient values of variables like physical capital, human capital, knowledge capital, and entrepreneurship in this study also indicate that physical capital, human capital, knowledge capital, and entrepreneurship are all significant and important factors shaping regional economic output. In addition, this study indicates that social enterprise start-up as well as new firm formation is a significant and important factor for regional economic development. The results of this study suggest a new direction for policy that focuses on instruments to enhance regional social entrepreneurship.

Discussion
While questions about social entrepreneurship effects can be answered only through conducting empirical studies in a variety of policy contexts, researchers in the area of social entrepreneurship have not adequately tested propositions related to social entrepreneurship effects in regional economic development and are still at an early stage in this research field. As one of only a few empirical studies that has examined social entrepreneurship effects in regional economic development, this study contributed to this research field by exploring effects of social entrepreneurship in regional economic development using objective measure such as gross regional domestic product per capita and the number of certificated social enterprise in South Korea. In particular, to explore the relationships between social entrepreneurship and regional economic development, this study presents a framework that illustrates the theoretical causal relationship between social entrepreneurship and regional economic development; and then analyzes the impact of social entrepreneurship on regional economic development by using data on certificated social enterprises in South Korea. The following summarizes the empirical results from pooled OLS, fixed-effect, and random-effect regression models, which simultaneously control for factors that are theorized to affect regional economic development.
First, results of the fixed-effect and random-effect regression models suggested that the regional GDP per capita increased as the number of regional certified social enterprises increased, indicating that a growth in the number of social enterprises contributes positively to regional economic development. It means that social enterprise start-up and operation contribute to promoting regional economic development. This result is in line with previous studies [4][5][6][7][8][9][15][16][17]23,24,27,[32][33][34]61] on social enterprise. In this study, the use of longitudinal study designs helps us better understanding the impact of social entrepreneurship measure as the number of certified social enterprise on regional economic development. Evidence from this study could strengthen and modify the framework, as reliance of previous empirical studies on results from cross-sectional studies in its development is undoubtedly a limitation.
Second, based on results of fixed-effect and random-effect regression models, this study also found that regional economic development variables such as physical capital, human capital, knowledge capital, and entrepreneurship contribute to regional economic development. This supports arguments made by previous studies based on neoclassical economic growth theories (ex. [66]), endogenous growth theories (ex. [67,68]), human capital theories (ex. [69,70]), and entrepreneurship theories (ex. [71][72][73][74]). Therefore, the results from this study tie well with the argument made by the variety of social scientists, including economists, state that physical capital, human capital, knowledge capital, and entrepreneurship are important factors in regional economic development [65].
Third, the results suggest a new direction for policy that focuses on instruments to promote regional social entrepreneurship in a region. The results of this study also imply that governments of each region should put forth an effort to implement policies to promote sustainable regional economic development and growth by actively fostering social enterprises there. Because each local government possess the ability to efficiently respond to the immediate needs of social enterprises in their regions, they need to make efforts to promote regional economic development through social enterprise policies.
Since much of the importance of social enterprises comes from their ability to reintegrate into the workforce people from disadvantaged backgrounds, it would also be necessary to measure the impact of social enterprise on the general unemployment rate and, in particular, the rate of unemployment among people with lower levels of education. Because of data unavailability, it was not possible to measure the impact of social enterprise on the rate of unemployment among people with lower levels of education. Alternatively, this study tried to measure the impact of social enterprise on the general unemployment rate of each region by using pooled OLS regression model and panel regression models (fixed-effect and random-effect models). However, the coefficients of social enterprise in regression results by using all empirical models were not statistically significant at the 95% confidence level. Specifically, the value of the regression coefficients of social enterprise for regional unemployment rate were 8.7304 (p = 0.055) in pooled OLS regression result, −2.0664 (p = 0.479) in fixed-effect panel regression result, and −1.1162 (p = 0.694) in random-effect panel regression result, respectively, although the empirical results on the impact of social enterprise on regional unemployment rate were not provided in detail in this study. Thus, more empirical research on the relationship between social enterprise and regional unemployment rate and especially the rate of unemployment among people with lower levels of education is needed in the future.
In addition, it is recommendable to isolate the effect of social enterprise from the effect of other factors; therefore, author of this study included a set of interaction variables in all empirical models such as pooled OLS regression model and panel regression models (fixed-effect and random-effect models) after generating new variables that reflect interactions between social enterprise and physical capital, between social enterprise and human capital, between social enterprise and knowledge capital, and between social enterprise and entrepreneurship. However, all regression results show that social enterprise is not statistically significant at the 95% confidence level. For better understanding of the relationship between social enterprise and regional economic development, follow-up empirical studies considering a variety of interaction effects among social enterprise, physical capital, human capital, knowledge capital, and entrepreneurship are needed in the future.
The South Korean government borrowed the general policy direction and the particular regulatory device from UK social enterprise policy; however, it failed to learn about the specific contexts of the UK policy and to attempt two-way communication with domestic stakeholders [30,39]. As a result of the failure, a distorted social enterprise policy transfer took place, and the Korean government's social enterprise policy has been biased toward the perspective of the government, not that of stakeholders such as the socially disadvantaged and vulnerable. As mentioned, South Korea has mainly developed social enterprises among various operators in the social economy in response to the global economic crisis and welfare state decline. Thus, the Korean government introduced a plan to support social enterprises and enacted the Social Enterprise Promotion Act (SEPA) in 2007 to provide services and work opportunities for socially excluded people such as the elders, low-income people, working poor, etc., and the ageing population. However, the South Korean social enterprise policy has been biased toward the perspective of the government. The distorted social enterprise policy transfer was caused by the centralized power structures, legacy of top-down control, and one-way communication of the Korean government [30]. A top-down approach with strict controls in centralized power structures is less likely to contribute to social entrepreneurship and innovation. Thus, the South Korean government needs to consider two-way communication with stakeholders to foster better understanding on both sides, although the government's current social enterprise policy has been shown to contribute to regional economic growth as it. The South Korean government needs to be more focused on social enterprise policies based on the needs of the socially disadvantaged and vulnerable rather than a broader response to unemployment in the future.
Finally, unlike in Europe and other countries, social enterprises in South Korea were institutionalized to solve employment and poverty issues of the working poor. They will likely be an alternative to labor market policy, which is inevitably underscored in an aging society with poverty issues among the elderly. Aging faster than western societies, South Korea is facing problems with employment and welfare, including workforce reduction, reduced productivity, and an increased fiscal burden. Therefore, an employment strategy for the elderly in the area of social economy is an important policy measure necessary for employment stability and social welfare. In this perspective, the development of regional social enterprise for the elderly is to be recommended as one possible method to help solve the problems of employment and welfare for the elderly in South Korea. Also, more empirical research on the role of senior social entrepreneurship in regional economic development is needed in the future.