Abstract
Mobility of workers is one of the most important channels of knowledge spillovers between firms. In this study, we look at the relationships between interfirm labor mobility and technological innovation at firm level. For the analysis of labor mobility, we use a novel Estonian database from an online job search portal that includes detailed data on occupations and education. The employee level data is matched with the Community Innovation Survey data on business enterprises. We estimate various specifications of the knowledge production functions augmented using mobility indicators. In particular, the results indicate that product innovations and total factor productivity are associated with subsequent higher worker flows from other, especially innovative, firms. Among flows involving people in different occupations, the flows of managers and professionals and technicians are more important.
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Notes
- 1.
In addition to Estonia, CV-Market operates in Latvia, Lithuania, Poland, Czech Republic, and Hungary.
- 2.
We believe that in the context of our study this disproportion is not a big problem as younger people in general are more mobile.
- 3.
The large number of cases where the employer could not be identified were due to various reasons; for example, the firm name being reported incorrectly, instead of the firm name, the name of the plant or shop reported, employment being from the time before the start of the business register, etc.
- 4.
It means that, e.g., in the CIS2006 survey, the questions on the firms’ innovative activities cover the whole period 2004–2006 and there is no data for each year 2004–2006.
- 5.
The values of the other explanatory variables are not presented to save space but these are mostly in line with the earlier studies (see, e.g., Masso and Vahter 2008).
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Acknowledgments
We are grateful to CV-Keskus for granting access to the data used in the paper. We thank Kärt Rõigas for excellent research assistance. We also thank Mihkel Reispass from Statistics Estonia and participants of seminars in Viljandi, Riga and Tartu. Financial support from European Social Fund project no 1.5.0109.10-006 “Occupational mobility in Estonia - involved factors and effects”, the Estonian Science Foundation grant no. 8311 and Ministry of Education and Research of the Republic of Estonia target financed project no. SF0180037s08 are gratefully acknowledged. The authors take the sole responsibility for all errors and omissions.
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Appendices
Appendix 1 Overview of Selected Studies on the Links Between Labor Mobility and Firm Innovativeness
Author(s) | Data | Method | Main results |
---|---|---|---|
Maliranta et al. (2008) | Finland, 1995 and 2000, longitudinal matched employer–employee data | Regression for the relative changes in labor productivity, wages and profitability regressed in the hiring and separating rates and the share of staying workers | Hiring workers previously employed in R&D to one’s R&D department did not increase the hiring firm’s productivity; however, both productivity and profitability increased when workers working previously in R&D jobs were hired into non-R&D activities. |
Graversen et al. (2002) | Sweden, Norway, Finland, Denmark: registers containing information on all employees, 1990s | Calculation of the number of people and respective rates of mobility between different sectors broken down by education of employees | The turnover is high, especially among employees who have entered the workplace recently and younger employees, there are large net flows from public sector to higher education, while there are also net flows from higher education and research institutes to the business sector |
Tomlinson and Miles (1999) | CIS2 data for 2,400 firms of the UK, 1998; Employment in Britain survey among 3,855 respondents | Regression models of various learning indicators of employees on indicators of career history (number of jobs, tenure); regressions of organizational commitment variables in job shifts between and with the employer | Dynamic knowledge flows (individuals learning new competencies and firms enhancing their capabilities) are fostered more by intra-firm than interfirm mobility; external mobility may have some negative consequences in terms of organizational commitment |
Møen (2005) | Matched employer–employee dataset from Norwegian machinery and equipment industry, 1986–1995, full-time males | Mincerian wage regressions augmented with the firms R&D intensity at current job and over previous career | Technical staff in R&D-intensive firms get wage payments for the knowledge acquired at work with lower wages during the early career, but gets later wage premium for the knowledge accumulated |
Almeida and Kogut (1999) | Patent data on semiconductor industry of the US, career paths of 438 semiconductor engineers constructed from patenting record | Calculations of rates of intra- and interregional mobility (regions as semiconductor clusters), logistic regressions for localization of knowledge (major patent and citing patents being from the same region) regressed in mobility measurements and other variables | The interregion mobility is especially high in Silicon Valley; mobility of patent holders across firms has an influence on the local transfer of knowledge, i.e., higher mobility within the region increases localization of knowledge. |
Lenzi (2006) | PATVAL survey from Italy on 106 holders of patents in pharmaceuticals | Duration model (Cox semiparametric approach) for the length of job spell | In addition to other determinants of job mobility, the interfirm mobility is enhanced by the inventive productivity of the inventor |
Magnani (2006) | USA Panel Study of Income Dynamics data on 20,000 male technical employees, 1981–1992 | Earnings regressions with additional independent variables of industry-level R&D and its interaction with experience and tenure | Some evidence that exposure to R&D activities allows workers to accumulate general human capital at the early stage of their career for the reason that they pay the price in terms of lower earnings |
Fallick et al. (2006) | Current Population Survey of job movers in Silicon Valley computer industry, 1994–2001 | Probit models for month-to-month job changes, independent variables region, education, family status, age, etc. | The job-hopping rates for males with college education are higher in Silicon Valley than in computer clusters outside of California; the higher mobility in California could be due to state laws restricting non-compete agreements |
Müller and Peters (2010) | Mannheim Innovation Panel (innovation survey of German firms), 2005, 2006, 2008 | Knowledge production functions for process and product innovations estimated as bivariate probit models | The probability of innovation first increases, but then decreases with labor churning (simultaneous hiring and separation of employees); in the case of non-duplicative knowledge churning, which has a more negative impact. The optimal churning is also larger for product than process innovations |
Görg and Strobl (2005) | Ghana, enterprise survey, 1991–1997, 278 domestic manufacturing firms | Measurements of firm level total factor productivity (estimated from Cobb–Douglas production function) regressed in the indicator variables on the mobility and work experience of the firm’s owner | Domestic firms with owners having past employment in a foreign firm within the same industry are more productive than the other domestic firms |
McCann and Simonen (2005) | CIS data for Finland augmented with R&D surveys and business register | Probit models for various types of innovations (knowledge production functions) with cooperation variables and variables for the share of new employees | Innovation is positively associated with a larger amount of new employees from other subregions, but negatively associated with new employees from the same location |
Tambe and Hitt (2007) | Mobility data from the US leading career portal matched with several databases on publicly listed companies (Compustat, Compact Disclosure Database) | Productivity regressions with internal stock of process knowledge and knowledge spillover variables (constructed as the stock of knowledge of other firms weighted with interfirm flows) | Interfirm worker mobility creates significant IT-related process innovations. Spillovers are larger in the case of the mobility of skilled workers and the workers directly involved in the daily operations of the firm |
Appendix B Definitions and Summary Statistics of Variables Used in Descriptive Tables and Regression Analysis
Variable name | Description | Mean | Standard deviation |
---|---|---|---|
Log number of employees | Natural log of the number of employees | 3.269 | 1.188 |
Product innovation | Dummy, 1 if firm reports having introduced new or significantly improved product | 0.213 | 0.409 |
Process innovation | Dummy, 1 if firm reports having introduced new or significantly improved production process | 0.218 | 0.413 |
Innovation expenditure dummy a | 1 if firm reports positive expenditure on innovation | 0.198 | 0.399 |
International competition | Dummy, 1 if the firm’s most important market is the international market | 0.531 | 0.499 |
Formal protection | Dummy, 1 if firm uses registration of design patterns, trademarks, copyright to protect inventions or innovations | 0.085 | 0.279 |
Public funding | Dummy, 1 if firm received public funding for innovation projects | 0.025 | 0.155 |
Sources within the firm or other firms within the group | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.553 | 0.350 |
Competitors | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.385 | 0.343 |
Customers | ‘4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.519 | 0.365 |
Supplier | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.545 | 0.370 |
Lack of appropriate sources of finance | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.404 | 0.396 |
Innovation cost too high | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.382 | 0.403 |
Lack of qualified personnel | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.362 | 0.378 |
Lack of information on technology | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.232 | 0.298 |
Lack of information on markets | ′4 values, 0, 1/3, 2/3, 1; higher value indicates greater importance | 0.237 | 0.307 |
Share of new employees | Ratio of new employees (2001–2005) to total employment | 0.047 | 0.096 |
Share of new employees with higher education | Ratio of new employees (2001–2005) with higher education to total employment | 0.014 | 0.041 |
Share of new employees with past employment in innovative firm | Ratio of new employees (2001–2005) with past job in innovative firm to total employment | 0.010 | 0.037 |
Share of leaving employees | Ratio of leaving employees (2001–2005) to total employment | 0.026 | 0.059 |
Churning rate | Ratio of churning between 2001 and 2005 to total employment | 0.012 | 0.030 |
Managers | Ratio of new managers (2001–2005) to total employment | 0.001 | 0.007 |
Professionals | Ratio of new professionals (2001–2005) to total employment | 0.000 | 0.006 |
Technicians | Ratio of new technicians (2001–2005) to total employment | 0.001 | 0.009 |
Elementary occupations | Ratio of new workers with elementary occupations (2001–2005) to total employment | 0.000 | 0.002 |
Service and sales workers | Ratio of new service and sales workers (2001–2005) to total employment | 0.000 | 0.002 |
Operators, craft and trade workers | Ratio of new operators, craft and trade workers (2001–2005) to total employment | 0.001 | 0.005 |
Clerks | Ratio of new clerks (2001–2005) to total employment | 0.000 | 0.005 |
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Masso, J., Eamets, R., Mõtsmees, P., Philips, K. (2012). The Impact of Interfirm Labor Mobility on Innovation: Evidence from Job Search Portal Data. In: Carayannis, E., Varblane, U., Roolaht, T. (eds) Innovation Systems in Small Catching-Up Economies. Innovation, Technology, and Knowledge Management, vol 15. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-1548-0_16
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