Evidence-based policy making

IZA World of Labor is an online platform that provides policy analysts, journalists, academics and society generally with relevant and concise information on labor market issues. Based on the latest research, it provides current thinking on labor markets worldwide in a clear and accessible style. IZA World of Labor aims to support evidence-based policy making and increase awareness of labor market issues, including current concerns like the impact of Covid-19, and longer-term problems like inequality.

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Matching as a regression estimator

Matching avoids making assumptions about the functional form of the regression equation, making analysis more reliable

Dan A. Black

“Matching” is a statistical technique used to evaluate the effect of a treatment by comparing the treated and non-treated units in an observational study. Matching provides an alternative to older estimation methods, such as ordinary least squares (OLS), which involves strong assumptions that are usually without much justification from economic theory. While the use of simple OLS models may have been appropriate in the early days of computing during the 1970s and 1980s, the remarkable increase in computing power since then has made other methods, in particular matching, very easy to implement.

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  • Inequality and informality in transition and emerging countries Updated

    A bidirectional relationship between informality and inequality exists; in transition and emerging countries, higher informality decreases inequality

    Roberto Dell'Anno, April 2021
    Higher inequality reduces capital accumulation and increases the informal economy, which creates additional employment opportunities for low-skilled and deprived people. As a result, informal employment leads to beneficial effects on income distribution by providing sources of income for unemployed and marginalized workers. Despite this positive feedback, informality raises problems for public finances and biases official statistics, reducing the effectiveness of redistributive policies. Policymakers should consider the links between inequality and informality because badly designed informality-reducing policies may increase inequality.
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  • Low-wage employment Updated

    Are low-paid jobs stepping stones to higher-paid jobs, do they become persistent, or do they lead to recurring unemployment?

    Claus Schnabel, March 2021
    Low-wage employment has become an important feature of the labor market and a controversial topic for debate in many countries. How to interpret the prominence of low-paid jobs and whether they are beneficial to workers or society is still an open question. The answer depends on whether low-paid jobs are largely transitory and serve as stepping stones to higher-paid employment, whether they become persistent, or whether they result in repeated unemployment. The empirical evidence is mixed, pointing to both stepping-stone effects and “scarring” effects (i.e. long-lasting detrimental effects) of low-paid work.
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  • Disability and labor market outcomes Updated

    Disability is associated with labor market disadvantage; evidence points to this being a causal relationship

    Melanie Jones, March 2021
    In Europe, about one in eight people of working age report having a disability; that is, a long-term limiting health condition. Despite the introduction of a range of legislative and policy initiatives designed to eliminate discrimination and facilitate retention of and entry into work, disability is associated with substantial and enduring labor market disadvantage in many countries. Identifying the reasons for this is complex, but critical to determine effective policy solutions that reduce the extent, and social and economic costs, of disability-related disadvantage.
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  • The value of language skills Updated

    A common language facilitates communication and economic efficiency, but linguistic diversity has economic and cultural value too

    In today's globalized world, people are increasingly mobile and often need to communicate across different languages. Learning a new language is an investment in human capital. Migrants must learn the language of their destination country, but even non-migrants must often learn other languages if their work involves communicating with foreigners. Economic studies have shown that fluency in a dominant language is important to economic success and increases economic efficiency. However, maintaining linguistic diversity also has value since language is also an expression of people's culture.
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  • Do labor costs affect companies’ demand for labor? Updated

    Overtime penalties, payroll taxes, and other labor policies alter costs and change employment and output

    Daniel S. Hamermesh, February 2021
    Higher labor costs (higher wage rates and employee benefits) make workers better off, but they can reduce companies’ profits, the number of jobs, and the hours each person works. The minimum wage, overtime pay, payroll taxes, and hiring subsidies are just a few of the policies that affect labor costs. Policies that increase labor costs can substantially affect both employment and hours, in individual companies as well as in the overall economy.
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  • Statistical profiling of unemployed jobseekers

    The increasing availability of big data allows for the profiling of unemployed jobseekers via statistical models

    Statistical models can help public employment services to identify factors associated with long-term unemployment and to identify at-risk groups. Such profiling models will likely become more prominent as increasing availability of big data combined with new machine learning techniques improve their predictive power. However, to achieve the best results, a continuous dialogue between data analysts, policymakers, and case workers is key. Indeed, when developing and implementing such tools, normative decisions are required. Profiling practices can misclassify many individuals, and they can reinforce but also prevent existing patterns of discrimination.
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  • Correspondence testing studies Updated

    What is there to learn about discrimination in hiring?

    Dan-Olof Rooth, January 2021
    Anti-discrimination policies play an important role in public discussions. However, identifying discriminatory practices in the labor market is not an easy task. Correspondence testing provides a credible way to reveal discrimination in hiring and provide hard facts for policies, and it has provided evidence of discrimination in hiring across almost all continents except Africa. The method involves sending matched pairs of identical job applications to employers posting jobs—the only difference being a characteristic that signals membership to a group.
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  • Individual and family labor market impacts of chronic diseases

    Chronic diseases worsen labor market outcomes, but firms’ hiring and retention policies can reduce them

    Amanda Gaulke, January 2021
    Chronic health conditions are a global concern and can impact labor market outcomes of those diagnosed and their caregivers. Since the global prevalence of many chronic health conditions is on the rise, it is important to know what firms can do to retain and hire workers who are impacted. Firms can improve hiring by addressing biases against potential employees with chronic health conditions. Furthermore, firms can retain impacted workers by offering workplace flexibility such as partial sick leave, work hour flexibility, and part-time work options.
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