Filges Trine, Jonassen Anders Bruun, Jørgensen Anne-Marie Klint
Campbell Syst Rev. 2018 Feb 28;14(1):1-194. doi: 10.4073/csr.2018.2. eCollection 2018.
This Campbell systematic review examines the impact of reducing the maximum duration of unemployment benefits on job-finding rates. Seven studies were included in the review, all of which are from European countries. Included studies had to examine the effect of a reduction in the maximum duration of entitlement of any kind of unemployment benefits on employment using a well-defined control group. Whilst 41 studies were identified, after allowing for study quality and data issues, only seven studies were included in the review. The included studies covered Austria (2 studies), France, Germany (3 studies) and Slovenia. Maximum entitlement ranged between 26 and 209 weeks. The studies analyzed reductions between 9 and 179 weeks, with an average of 43 weeks. The studies analyze data from 1,154,090 unemployment spells. Reducing the duration of unemployment benefits increases the exit rate from unemployment. Data from seven studies show that the exit rate from unemployment for those with reduced duration of benefit entitlement on average is 10 per cent. This corresponds to a 52% chance that those with reduced duration will find a job before an unemployed person with the existing, longer duration (no effect corresponds to a 50% chance). There is not enough evidence to determine effects on the exit rate from re-employment or on the wage rate in the job found. There are insufficient high-quality studies to allow an examination of variation of effects.
Reducing the maximum duration of unemployment benefits is one strategy used to reduce unemployment. Evidence from seven studies confirms such an effect. However, the effect is small and more studies of higher quality are needed to give more detailed findings to inform policy. Evidence from seven studies shows shortening the maximum duration of unemployment benefit entitlement has a small effect on the job finding rate of the unemployed. Policymakers may wish to reduce the generosity of the unemployment benefits system in order to reduce unemployment levels. Reducing benefit levels may be politically more difficult than shortening the length of the unemployment benefit eligibility period to create work incentives for the unemployed.This review summarizes studies that measure the effects of shortening the maximum duration of unemployment benefit entitlement on job finding rates. Included studies had to examine the effect of a reduction in the maximum duration of entitlement of any kind of unemployment benefits on employment using a well-defined control group.Whilst 41 studies were identified, after allowing for study quality and data issues, only seven studies were included in the review. The included studies covered Austria (2 studies), France, Germany (3 studies) and Slovenia. Maximum entitlement ranged between 26 and 209 weeks. The studies analyzed reductions between 9 and 179 weeks, with an average of 43 weeks. The studies analyze data from 1,154,090 unemployment spells. Reducing the duration of unemployment benefits increases the exit rate from unemployment. Data from seven studies show that the exit rate from unemployment for those with reduced duration of benefit entitlement on average is 10 per cent. This corresponds to a 52% chance that those with reduced duration will find a job before an unemployed person with the existing, longer duration (no effect corresponds to a 50% chance).There is not enough evidence to determine effects on the exit rate from re-employment or on the wage rate in the job found. There are insufficient high-quality studies to allow an examination of variation of effects. On the basis of this limited number of studies, shortening the maximum duration of unemployment benefit entitlement has a small effect on the job finding rate of the unemployed. Whether unemployed workers responding to a shorter potential benefit entitlement may be worse off, in the sense that they accept "lower quality" jobs, has not yet been fully investigated.But the review finds a surprisingly low number of studies with a sufficiently low risk of bias to be used for synthesis to determine the effect size of shortening the maximum duration of unemployment benefit entitlement. Many studies had to be excluded as they had a high risk of bias. This is a finding in its own right.There is a need for future studies to more thoroughly discuss the assumptions of the study design and justify the choice of method by considering and reporting all relevant data and tests. Future studies should also use data with all relevant information, in particular, information on whether eligible individuals actually received unemployment benefits and information on individual maximum entitlement duration. The review authors searched for studies published up to December 2016. This Campbell Systematic Review was published in February 2018.
EXECUTIVE SUMMARY/ABSTRACT: Unemployment benefit programmes protect individuals against loss of income and provide unemployed individuals with the possibility of finding a better match between their qualifications and job vacancies. However, unemployment benefits may also distort incentives by subsidizing long and unproductive job searches. In order to reduce unemployment levels, policymakers may wish to reduce the generosity of the unemployment system. While it may be politically intractable to lower the monetary amount of unemployment benefits available, the length of the unemployment benefit eligibility period is often used as a political instrument to create work incentives for the unemployed. If a shorter benefit period results in a significantly increased incentive for finding work, shortening the benefit eligibility period may reduce the share of long and unproductive job searches and thereby decrease the overall unemployment level. The purpose of this review is to systematically uncover relevant studies in the literature that measure the effects of shortening the maximum duration of unemployment benefit entitlement on job finding rates, and to synthesize the effects in a transparent manner. As a secondary objective we will, where possible, investigate the extent to which the effects differ among different groups of unemployed people, such as those with high/low levels of education or men/women, and further explore from which point in the unemployment spell unemployed individuals react to the length of benefit entitlement. The search was concluded in March 2016. Relevant studies were identified through electronic searches of bibliographic databases, government policy databanks, internet search engines and hand searching of core journals. We searched to identify both published and unpublished literature. The searches were international in scope. Reference lists of included studies and relevant reviews were also searched. The intervention of interest was a reduction (change) in the maximum duration of entitlement of any kind of unemployment benefits. We included unemployed individuals who received any type of time-limited benefit during their unemployment spell. All study designs that used a well-defined control group were eligible for inclusion in this review. Studies that utilised qualitative approaches were not included in the review due to the absence of adequate control group conditions. Random effects models were used to pool data across the studies. We used the point estimate of the hazard ratio. Pooled estimates were weighted with inverse variance methods, and 95% confidence intervals were used. A sensitivity analysis was performed to evaluate whether the pooled effect sizes were robust across components of methodological quality, in relation to the quality of data and whether the study analysed an extension of entitlement duration. The initial search for potentially relevant studies resulted in a total number of 34,930 hits. A total of 41 studies, consisting of 66 papers, from 15 different countries, met the inclusion criteria and were vetted by the review authors. Only 38 studies provided data that permitted the calculation of an effect size for the primary outcome. Of these 38 studies, 28 studies could not be used in the data synthesis due to a too high risk of bias. A further 3 studies could not be used in the data synthesis due to overlapping of data samples. As a result, only 7 studies were included in the data synthesis and one of these studies only provided results on the secondary outcome. In total, 6 studies provided data that permitted the calculation of an effect size for the primary outcome and 3 studies provided data that permitted the calculation of secondary outcome. The sample size used in the studies ranged from 5,017 spells of unemployment to 509,355 spells. The total number of unemployment spells was 1,154,090, implying an average sample size of 164,870 spells of unemployment per study.The seven studies covered Austria, France, Germany and Slovenia. There was a high degree of variation in maximum entitlement, ranging between 26 and 209 weeks. On average the studies analysed a reduction of 43 weeks in maximum entitlement; the smallest being a reduction of 9 weeks and the largest a reduction of 179 weeks. Four studies restricted the analysis to a specific age group and three studies restricted the analysis to specific work experience levels. All studies used non-randomised designs. In the majority of studies the risk of bias was high.This review found a statistically significant effect of shortening the maximum duration of unemployment benefit entitlement. The overall impact of shortening the maximum duration of unemployment benefit entitlement, obtained using hazard ratios, was estimated at 1.10 (95% CI 1.03 to 1.17, p=0.0005), which translates into an increase of approximately 10% in the exit rate from unemployment into employment and corresponds to a 52% chance that a treated unemployed person will find a job before a non-treated unemployed person.Thus, although small, the available evidence associated with a sufficiently low risk of bias supports the hypothesis of an incentive effect of shortening the maximum duration of unemployment benefit entitlement. There was a lack of evidence to conclude that shortening the maximum duration of unemployment benefit entitlement has an impact on the quality of the job obtained.Only three studies provided data on the exit rate from re-employment and three studies provided data on the log wage ratio in the re-employment job.The overall impact of shortening the maximum duration of unemployment benefit entitlement on the exit rate from the re-employment job, obtained using hazard ratios, was 0.99 (95% CI 0.97 to 1.02, p=0.64) and the overall wage ratio was 1.00 (95% CI 0.99 to 1.01, p=0.089).We did not find any adverse effects.Sensitivity analyses resulted in no appreciable change in effect size, suggesting that the results are robust. The limited number of studies used in the meta-analysis should, however, be considered when interpreting the results.Due to having an insufficient number of studies available for moderator analysis to be performed, it was not possible to examine whether the effect of reducing the maximum potential benefit duration on job-finding differs for men and women, for particular age groups or educational groups, or if factors such as good or bad labour market conditions, the type of unemployment benefit, the availability of alternative benefits, or whether compulsory activation is part of the institutional system, have an impact on the effect. To the best of our knowledge, this is the first systematic review analysing the magnitude of the effect of shortening the maximum duration of unemployment benefit entitlement on the job finding rate. The review finds a surprisingly low number of studies with a sufficiently low risk of bias to enter a synthesis of the effect size of shortening the maximum duration of unemployment benefit entitlement. On the basis of this limited number of studies, shortening the maximum duration of unemployment benefit entitlement displays a limited potential for altering the employment prospects of the unemployed individuals. The available evidence does suggest an effect on the job finding rate of shortening the maximum duration of unemployment benefit entitlement, but the effect is small. Further, whether unemployed workers responding to a shorter potential benefit entitlement may be worse off, in the sense that they accept "lower quality"" jobs, has not yet been fully investigated.The number of studies used in the data synthesis (7) is relatively low compared to the large number of studies (41) meeting the inclusion criteria for the review. The reduction in studies eligible for inclusion in the data synthesis was primarily caused by a judgment of too high a risk of bias. Thus, the process of excluding studies with too high risk of bias from the meta-analysis applied in this review left us with only seven studies to synthesize. This is a finding in its own right, entailing important information for stakeholders on the degree of confidence to place on the expected gains from changing the maximum potential unemployment benefit duration; fewer studies with too high risk of bias would have provided a more robust literature on which to base conclusions. There is a need for future studies to more thoroughly discuss the identifying assumptions of the study design and justify the choice of method by considering and reporting all relevant data and tests. Further, future studies should rely on data where all relevant information is available, in particular information on whether eligible individuals actually received unemployment benefits and information on individual maximum entitlement duration.
本坎贝尔系统评价考察了缩短失业救济金最长领取期限对就业几率的影响。该评价纳入了7项研究,均来自欧洲国家。纳入的研究必须使用明确界定的对照组,考察任何一种失业救济金领取期限上限的缩短对就业的影响。虽然共识别出41项研究,但在考虑研究质量和数据问题后,该评价仅纳入了7项研究。纳入的研究涵盖奥地利(2项研究)、法国、德国(3项研究)和斯洛文尼亚。领取期限上限在26周至209周之间。这些研究分析了9周至179周的缩短幅度,平均缩短43周。这些研究分析了来自1,154,090个失业时段的数据。缩短失业救济金期限会提高失业者的退出率。7项研究的数据表明,领取救济金期限缩短者的失业退出率平均为10%。这意味着领取期限缩短者在现有较长领取期限的失业者之前找到工作的概率为52%(无影响对应的概率为50%)。没有足够的证据来确定对再就业退出率或找到工作后的工资率的影响。没有足够的高质量研究来考察影响的差异。
缩短失业救济金最长领取期限是用于降低失业率的一种策略。7项研究的证据证实了这种效果。然而,这种效果较小,需要更多高质量研究来给出更详细的结果以指导政策制定。7项研究的证据表明,缩短失业救济金领取期限上限对失业者的就业几率有微小影响。政策制定者可能希望降低失业救济金制度的慷慨程度以降低失业率。降低救济金水平在政治上可能比缩短失业救济金资格期限更困难,因为后者能为失业者创造工作激励。本评价总结了衡量缩短失业救济金领取期限上限对就业几率影响的研究。纳入的研究必须使用明确界定的对照组,考察任何一种失业救济金领取期限上限的缩短对就业的影响。虽然共识别出41项研究,但在考虑研究质量和数据问题后,该评价仅纳入了7项研究。纳入的研究涵盖奥地利(2项研究)、法国、德国(3项研究)和斯洛文尼亚。领取期限上限在26周至209周之间。这些研究分析了9周至179周的缩短幅度,平均缩短43周。这些研究分析了来自1,154,090个失业时段的数据。缩短失业救济金期限会提高失业者的退出率。7项研究的数据表明,领取救济金期限缩短者的失业退出率平均为10%。这意味着领取期限缩短者在现有较长领取期限的失业者之前找到工作的概率为52%(无影响对应的概率为50%)。没有足够的证据来确定对再就业退出率或找到工作后的工资率的影响。没有足够的高质量研究来考察影响的差异。基于这有限数量的研究,缩短失业救济金领取期限上限对失业者的就业几率有微小影响。对缩短潜在救济金领取期限做出反应的失业工人是否会因接受“质量较低”的工作而处境更糟,尚未得到充分研究。但该评价发现,风险偏倚足够低、可用于综合分析以确定缩短失业救济金领取期限上限影响大小的研究数量惊人地少。许多研究因风险偏倚高而被排除。这本身就是一个发现。未来的研究需要更全面地讨论研究设计的假设,并通过考虑和报告所有相关数据及检验来证明方法选择的合理性。未来的研究还应使用包含所有相关信息的数据,特别是关于符合条件的个人是否实际领取了失业救济金的信息以及个人领取期限上限的信息。该评价作者检索了截至2016年12月发表的研究。本坎贝尔系统评价于2018年2月发表。
执行摘要/摘要:失业救济金计划保护个人免受收入损失,并为失业者提供机会,使其资质与职位空缺更匹配。然而,失业救济金也可能通过补贴冗长且无成效的求职行为而扭曲激励机制。为了降低失业率,政策制定者可能希望降低失业制度的慷慨程度。虽然降低可获得的失业救济金金额在政治上可能难以操作,但失业救济金资格期限的长短常被用作一种政治手段,为失业者创造工作激励。如果较短的救济期限能显著增加求职激励,那么缩短救济资格期限可能会减少冗长且无成效的求职行为,从而降低总体失业率。本评价的目的是系统地发掘文献中衡量缩短失业救济金领取期限上限对就业几率影响的相关研究,并以透明的方式综合这些影响。作为次要目标,我们将在可能的情况下,调查不同失业人群(如教育程度高/低者或男性/女性)之间影响的差异程度,并进一步探究失业者从失业时段的哪个时间点开始对救济金领取期限的长短做出反应。检索于2016年3月结束。通过对书目数据库、政府政策数据库、互联网搜索引擎进行电子检索以及手工检索核心期刊来识别相关研究。我们检索以识别已发表和未发表的文献。检索范围是国际性的。还检索了纳入研究和相关评价的参考文献列表。感兴趣的干预措施是任何一种失业救济金领取期限上限的缩短(变化)。我们纳入了在失业时段领取任何类型限时救济金的失业者。所有使用明确界定对照组的研究设计都有资格纳入本评价。由于缺乏足够的对照组条件,采用定性方法的研究未纳入本评价。使用随机效应模型对各项研究的数据进行汇总。我们使用风险比的点估计值。汇总估计值采用逆方差法加权,并使用95%置信区间。进行了敏感性分析,以评估汇总效应大小在方法质量组成部分、数据质量以及研究是否分析了领取期限延长方面是否稳健。对潜在相关研究的初步检索共得到34,930条结果。共有41项研究(由66篇论文组成)来自15个不同国家,符合纳入标准并经过评价作者审核。只有38项研究提供了可用于计算主要结果效应大小的数据。在这38项研究中,28项研究因风险偏倚过高而无法用于数据合成。另有3项研究因数据样本重叠而无法用于数据合成。结果,只有7项研究被纳入数据合成,其中1项研究仅提供了次要结果的结果。总共有6项研究提供了可用于计算主要结果效应大小的数据,3项研究提供了可用于计算次要结果的数据。这些研究中使用的样本量从5,017个失业时段到509,355个失业时段不等。失业时段总数为1,154,090个,这意味着每项研究的平均样本量为164,870个失业时段。这7项研究涵盖奥地利、法国、德国和斯洛文尼亚。领取期限上限差异很大,在26周至209周之间。平均而言,这些研究分析的领取期限上限缩短了43周;最短缩短9周,最长缩短179周。4项研究将分析限制在特定年龄组,3项研究将分析限制在特定工作经验水平。所有研究均采用非随机设计。在大多数研究中,风险偏倚较高。本评价发现缩短失业救济金领取期限上限有统计学显著影响。使用风险比得出的缩短失业救济金领取期限上限的总体影响估计为1.10(95%置信区间为1.03至1.17,p = 0.0005),这意味着从失业到就业的退出率增加了约10%,并且意味着接受处理的失业者在未接受处理的失业者之前找到工作的概率为52%。因此,尽管影响较小,但与足够低的风险偏倚相关的现有证据支持缩短失业救济金领取期限上限具有激励效应的假设。没有证据表明缩短失业救济金领取期限上限对所获得工作的质量有影响。只有3项研究提供了再就业退出率的数据,3项研究提供了再就业工作中对数工资比的数据。使用风险比得出的缩短失业救济金领取期限上限对再就业退出率的总体影响为0.99(95%置信区间为0.97至1.02,p = 0.64),总体工资比为1.00(95%置信区间为0.99至1.01,p = 0.089)。我们未发现任何不利影响。敏感性分析结果显示效应大小没有明显变化,表明结果是稳健的。然而,在解释结果时应考虑荟萃分析中使用的研究数量有限。由于可用于进行调节分析的研究数量不足,无法考察缩短最大潜在救济期限对就业几率的影响在男性和女性、特定年龄组或教育组之间是否存在差异,或者诸如劳动力市场状况好坏、失业救济金类型、替代福利的可获得性或强制激活是否是制度体系的一部分等因素是否对该影响有作用。据我们所知,这是第一项系统评价,分析缩短失业救济金领取期限上限对就业几率影响的大小。该评价发现,风险偏倚足够低、可用于综合分析缩短失业救济金领取期限上限影响大小的研究数量惊人地少。基于这有限数量的研究,缩短失业救济金领取期限上限在改变失业者就业前景方面的潜力有限。现有证据确实表明缩短失业救济金领取期限上限对就业几率有影响,但影响较小。此外,对缩短潜在救济金领取期限做出反应的失业工人是否会因接受“质量较低”的工作而处境更糟,尚未得到充分研究。与符合该评价纳入标准的大量研究(41项)相比,数据合成中使用的研究数量(7项)相对较少。符合纳入数据合成条件的研究数量减少主要是因为判断风险偏倚过高。因此,本评价在荟萃分析中排除风险偏倚过高的研究后,只剩下7项研究进行合成。这本身就是一个发现,为利益相关者提供了关于改变最大潜在失业救济期限预期收益的置信度的重要信息;风险偏倚过高的研究越少,得出结论所依据的文献就越可靠。未来的研究需要更全面地讨论研究设计的识别假设,并通过考虑和报告所有相关数据及检验来证明方法选择的合理性。此外,未来的研究应依赖包含所有相关信息的数据,特别是关于符合条件的个人是否实际领取了失业救济金的信息以及个人领取期限上限的信息。