| 1. |
- Angelov, Nikolay, et al.
(författare)
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COVID-19 and income inequality : evidence from monthly population registers
- 2023
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Ingår i: Journal of Economic Inequality. - : Springer. - 1569-1721 .- 1573-8701. ; 21:2, s. 351-379
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Tidskriftsartikel (refereegranskat)abstract
- We measure the distributional impact of the COVID-19 pandemic using newly released population register data in Sweden. Monthly earnings inequality increased during the pandemic, and the key driver is income losses among low-paid individuals while middle- and high-income earners were almost unaffected. In terms of employment, as measured by having positive monthly earnings, the pandemic had a larger negative impact on private-sector workers and on women. In terms of earnings conditional on being employed, the effect was still more negative for women, but less negative for private-sector workers compared to publicly employed. Using data on individual take-up of government COVID-19 support, we show that policy significantly dampened the inequality increase, but did not fully offset it. Annual total market income inequality, which also includes capital income and taxable transfers, shows similar patterns of increasing inequality during the pandemic. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
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| 2. |
- Angelov, Nikolay, 1975-
(författare)
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Essays on Unit-Root Testing and on Discrete-Response Modelling of Firm Mergers
- 2006
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Essay 1 investigates the time-series properties of the price of iron ore. The focus is on unit-root testing in the presence of a structural break. Unit-root tests with or without structural breaks are applied to historical prices of five different qualities of Swedish and Brazilian iron ore. Tests with exogenous or endogenous breaks are analyzed. Using unit-root tests allowing for an exogenous structural break in 1973, the year of the oil-price shock, the null hypothesis of a unit root is rejected for three of the five series. The sign and nature of the estimated breaks correspond to the state of the iron and steel industry during the oil-price shock.Essay 2 was co-authored with Rolf Larsson and deals with the issue of unit-root tests involving several parameters of the model. In a first order autoregressive model with drift or drift and trend, we derive the likelihood ratio test for a unit root against the stationary alternative. We also derive the test in a state space model with trend. Finite sample and asymptotic critical values are obtained by Monte Carlo simulations, and we examine the power performance of the likelihood ratio test.Essay 3 proposes a way to model firm mergers using the roommate matching game, whereby firms make preference rankings of potential merger partners. Given firms' preferences, game-theoretic mechanisms lead to a matching implying that each firm is either self-matched or assigned a merger partner. We derive expressions for the probability of a merger between a specific firm pair, and also a log-likelihood function for estimation using firm-specific data. The model's finite-sample properties are examined.The roommate game results in a complicated log-likelihood function, which places restrictions on the number of firms. Consequently, the model proposed in Essay 4 defines a different set of game rules. Using a mechanism of bid proposals among firms, we define a condition for firm acquisitions in terms of profit index comparisons. The resulting log-likelihood function is applicable to any number of firms, and the acquisition model is estimated on a panel data set consisting of European firms from the pulp and paper industry.
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| 3. |
- Angelov, Nikolay, et al.
(författare)
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Factors Associated with Occupational Disability Classification
- 2018
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Ingår i: Scandinavian Journal of Disability Research. - : STOCKHOLM UNIV PRESS. - 1501-7419 .- 1745-3011. ; 20:1, s. 37-49
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Tidskriftsartikel (refereegranskat)abstract
- To provide disabled people with the same opportunities to participate in working life as everyone else, certain measures, such as wage subsidies, compensating for a reduced work capacity, might be necessary. To ascertain that these measures are limited to the most needy a system that identifies the target group is required. The Swedish Public Employment Service's (PES') classification of occupational disability constitutes such a system. In this study we document how jobseekers' demographic characteristics, socioeconomic position, and health-related conditions are associated with being classified as occupationally disabled by the PES, and how this classification might be distorted by unintended incentive mechanisms. Our empirical analyses show that both previous health conditions and previous socioeconomic disadvantages were associated with a higher likelihood of being classified as occupationally disabled. To what extent these jobseekers actually had impairments that entailed reduced work capacity cannot be concluded from the available data, but our results indicate that also the goals set by the government may have influenced how the PES classified jobseekers.
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| 4. |
- Angelov, Nikolay, et al.
(författare)
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Green jobs
- 2011
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Bok (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Angelov, Nikolay
(författare)
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Modelling Firm Mergers As A Roommate Problem
- 2006
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- We propose a way to model firm mergers using a matching game known as the roommate problem, whereby firms are assumed to make preference rankings of po- tential merger partners. The position of a firm in another firm’s ranking is assumed to be governed by an index, which in turn consists of a deterministic part and of a stochastic one, similar to the latent indices used in standard discrete-choice models. Given all firms’ preferences, game-theoretic mechanisms lead to a matching whereby each firm is either self-matched or assigned a merger partner. We derive expressions for the probability of a merger between a specific firm pair, and also a log-likelihood function for estimation using firm-specific data. Using a simulation in a setting with groups of three firms involved in roommate games within each group, the model’s finite-sample properties are examined.
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| 6. |
- Angelov, Nikolay, et al.
(författare)
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När skolan själv får välja – en ESO-rapport om friskolornas etableringsmönster
- 2016
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I rapporten analyseras vilka faktorer som påverkar var friskolor väljer att etablera sig.Rapporten konstaterar att friskolor oftare etableras i områden med många högutbildade – men också i invandrartäta områden. I kommuner som styrs av en vänstermajoritet etableras färre friskolor jämfört med i andra kommuner. Rapporten visar också att förväntan om höga intäkter och låga lokalkostnader tycks spela roll när icke-vinstsyftande friskolor väljer var de ska etablera sig. För de vinstsyftande skolorna verkar däremot de ekonomiska förutsättningarna inte påverka etableringen.För att med större säkerhet kunna säga något om hur kommunernas ersättning till friskolorna påverkar var nya friskolor etableras behövs bättre data. Det är en brist att denna information saknas i Sverige, ett land med världens kanske mest långtgående skolpengssystem.
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| 7. |
- Angelov, Nikolay, et al.
(författare)
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Parenthood and the Gender Gap in Pay
- 2016
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Ingår i: Journal of Labor Economics. - 0734-306X .- 1537-5307. ; 34:3, s. 545-579
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Tidskriftsartikel (refereegranskat)abstract
- We compare the income and wage trajectories of women to those of their male partners before and after parenthood. Focusing on the within-couple gap allows us to control for both observed and unobserved attributes of the spouse and to estimate both short-and long-term effects of entering parenthood. We find that 15 years after the first child has been born, the male-female gender gaps in income and wages have increased by 32 and 10 percentage points, respectively. In line with a collective labor supply model, the magnitude of these effects depends on counterfactual relative incomes or wages within the family.
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| 8. |
- Angelov, Nikolay, et al.
(författare)
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Practical causal analysis for the treatment timing effect on doubly censored duration : effect of fertility on work span
- 2019
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Ingår i: Journal of the Royal Statistical Society. - : John Wiley & Sons. - 0964-1998 .- 1467-985X. ; 182:4, s. 1561-1585
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Tidskriftsartikel (refereegranskat)abstract
- We present a practical causal framework to estimate the effects of a treatment and its timing on a doubly censored response. We then apply the methodology to find the effect of fertility on work duration where, not just fertility itself, but the timing of fertility should matter greatly. Since fertility and its decision of timing are chosen by the individual, it is likely to be endogenous. We use a populationwide data set over mothers with two children to address the endogeneity issue by using the first two children's same-sex instrument in a 'control function' setting. We find that having a third child reduces the average labour market work duration, and that the magnitude of the effect increases monotonically with the waiting time between the second and third children. Moreover, the negative effect varies substantially over education and second-birth age, being stronger for mothers with higher education and lower second-birth age.
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| 9. |
- Angelov, Nikolay, et al.
(författare)
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Sick of family responsibilities?
- 2020
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Ingår i: Empirical Economics. - : Springer Nature. - 0377-7332 .- 1435-8921. ; 58:2, s. 777-814
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Tidskriftsartikel (refereegranskat)abstract
- This study estimates the effect of parenthood on the within-couple gender gap in paidsick leave. We find that as a result of parenthood, mothers more than double their sick leave compared with fathers. However, there is no corresponding effect on health measured by hospital stays. We also find that mothers’ income trajectory is strongly related to the magnitude of the effect: A less favorable income trajectory is associated with a larger effect of parenthood on the sick leave gap. Since mothers’ labor supply is measured 1 year prior to sick leave, this result suggests that the lower labor supply induces an increase in sick leave rather than the other way round.
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| 10. |
- Angelov, Nikolay
(författare)
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Structural Breaks In Iron-Ore Prices : The Impact Of The 1973 Oil Crisis
- 2006
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This paper investigates the time-series properties of the price of iron ore. The focus is on testing a unit-root null hypothesis against a trend-stationary alternative, with a structural break allowed under both hypotheses. We consider unit-root tests with or without structural breaks, applied on historical prices of five different qualities of Swedish and Brazilian iron ore. New and more accurate critical values for the exogenous-break tests are calculated, and several of the asymptotic tests are accompanied by their bootstrap counterparts due to the limited sample sizes.Using unit-root tests allowing for an exogenous structural break in 1973, the null hypothesis of a unit root is rejected for three of the five series. The sign and nature of the estimated breaks correspond to the state of the iron and steel industry during the first half of the 1970s. The bootstrap tests give results close to those from the asymptotic ones.
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