Working Papers

Seria wydawnicza WNE WORKING PAPERS prowadzona jest przez WNE UW od 2008 r. i jak dotąd opublikowano w niej ponad 400 prac.

Seria WNE Working Papers służy szybkiemu upowszechnianiu wyników badań prowadzonych na Wydziale Nauk Ekonomicznych UW. Publikowane tu teksty mają charakter wersji roboczych (pre-printów): mogą być uzupełniane lub poprawiane w miarę postępu prac nad tekstem i procesu wydawniczego. Prezentujemy aktualną wersję udostępnioną przez autorów, opatrzoną datą oraz identyfikatorami DOI/ISSN – co ułatwia jej cytowanie i śledzenie kolejnych iteracji. Każdy dokument zachowuje pełne prawa autorskie swoich twórców, a w przypadku późniejszych zmian, autorzy mogą w dowolnym momencie zamieścić zaktualizowany plik lub wskazać miejsce ostatecznego wydania.

Do serii WORKING PAPERS przyjmowane są artykuły pracowników naukowych WNE UW oraz publikacje z konferencji organizowanych na WNE UW. Artykuły powinny dotyczyć ekonomii, mieć charakter oryginalnych prac badawczych, nie być wcześniej publikowane. Przyjmowane są wyłącznie teksty w języku angielskim.

Prace prosimy przesyłać e-mailem na adres: /Gd9i6!}q0Rg5?sXejJhT+`pD-2]#[%3W!S!gnS{4Z&VkGKs@`]lEfMxy

Prosimy przesyłać dwa pliki:

(1) główny tekst bez podania tytułu artykułu oraz autorów (plik DOC/DOCX) oraz

(2) stronę tytułową zawierającą: tytuł opracowania, autorów oraz ich afiliację (plik DOC/DOCX). 

Przed przesłaniem tekstu prosimy zapoznać się z szczegółowymi wymogami edycyjnymi.

Redaktorem wydawniczym serii Working Papers jest dr Maciej Bukowski.

Ilość wyników 4

WP(21/2024)457. The Impact of Mobile Phones on Change in Employment Status in South Africa

Autorzy: Grzybowski Łukasz, Zubair Maghmood Patel
In this paper we analyse whether having a mobile phone impacts chances of getting employed. We use five waves of panel data from the National Income Dynamic Survey (NIDS), which was conducted in South Africa between years 2008 and 2017. In the estima…

WP457. The Impact of Mobile Phones on Change in Employment Status in South Africa

In this paper we analyse whether having a mobile phone impacts chances of getting employed. We use five waves of panel data from the National Income Dynamic Survey (NIDS), which was conducted in South Africa between years 2008 and 2017. In the estimation we include a vector of observable individual and household characteristics and account for unobserved heterogeneity amongst individuals. The estimation results suggest that mobile phone ownership has a positive impact on the change in employment status from unemployed to employed. On the other hand, ownership of a computer by a household and computer literacy do not increase the likelihood of getting employed. The average probability of becoming employed increases from 54.2% when no one among unemployed adults has a mobile phone to 57.4% when all of them have a mobile phone, which is an increase of 5.9%.


DOI: https://doi.org/10.33138/2957-0506.2024.21.457
Grzybowski Łukasz, Zubair Maghmood Patel
Mobile phones Employment NIDS South Africa

WP(20/2024)456. Mobile money and financial inclusion in Sub-Saharan Africa

Autorzy: Grzybowski Łukasz, Valentin Lindlacher, Onkokame Mothobi
In this paper, we utilize survey data collected in 2017 from 12,735 individuals across nine Sub- Saharan African countries. We merge the survey data with geographic information related to the proximity of mobile network towers and banking facilities,…

WP456. Mobile money and financial inclusion in Sub-Saharan Africa

In this paper, we utilize survey data collected in 2017 from 12,735 individuals across nine Sub- Saharan African countries. We merge the survey data with geographic information related to the proximity of mobile network towers and banking facilities, based on the geo-locations of the respondents. Our estimation approach comprises a two-stage model. In the first stage, consumers make choices between adopting a feature phone or a smartphone. In the second stage, they make decisions regarding the use of mobile money services. Our findings reveal that network coverage significantly influences the adoption of mobile phones. Moreover, we observe that mobile money services are more favored by younger and relatively wealthier individuals for sending money, while older individuals and those with lower incomes tend to use mobile wallets for receiving money. Consequently, mobile money services facilitate younger migrant workers residing in areas with better infrastructure in providing support to their older relatives in less developed regions.


DOI: https://doi.org/10.33138/2957-0506.2024.20.456
Grzybowski Łukasz, Valentin Lindlacher, Onkokame Mothobi
Mobile money Sub-Saharan Africa Financial inclusion

WP(8/2009)18. Labour Market Racial Discrimination in South Africa Revisited

Autorzy: Szelewicki Maciej, Tyrowicz Joanna
Discrimination is a significant issue in labour market economics across developed as well as developing countries. In this paper we inquire the actual size of wage discrimination in the Republic of Soutn Africa, accounting for large differences in in…

WP18. Labour Market Racial Discrimination in South Africa Revisited

Discrimination is a significant issue in labour market economics across developed as well as developing countries. In this paper we inquire the actual size of wage discrimination in the Republic of Soutn Africa, accounting for large differences in individual endowments. We apply the Oaxaca-Blinder decomposition as well as propensity score matching to adequately determine the role of discrimination in the wage gaps observed. Although the size of the absolute racial wage gap is enormous, amounting for more than 500%, the actual estimated effect non-attributable to other factors ranges between 45%-55%. This estimator, however, assumes homogenous discrimination across the wage distribution, while data suggest that there are significant educational, sectoral and occupational differentials. To account for these effects, we implement propensity score matching by finding 'statistical twins' of the White population among the Black population, thus we demonstrate how wages differ between these groups in comparable labour market situations. Here too we find that wages for the White are on average approximately 30%, while the effects vary at quartiles of the wage distribution.


Szelewicki Maciej, Tyrowicz Joanna
discrimination Oaxaca-Blinder decomposition propensity score matching Republic of South Africa racial wage gap

WP(/2008)6. Foreign Debt And Domestic Savings In Developing Countries

Autorzy: Okafor Luke Emeka, Tyrowicz Joanna
This paper approaches the question of potential causality between foreign debt and domestic savings in the context of developing countries. Literature provides evidence in as far as foreign debt and development is concerned, but little attention was …

WP6. Foreign Debt And Domestic Savings In Developing Countries

This paper approaches the question of potential causality between foreign debt and domestic savings in the context of developing countries. Literature provides evidence in as far as foreign debt and development is concerned, but little attention was given so far to internal potential for capital formation. We provide a theoretical framework and test its relevance using 1975-2004 data for two groups of countries: sub-Saharan Africa and Latin America with the Caribbean. With the use of instrumental variables we find negative impact of foreign debt on domestic savings especially in the long run. The results are not susceptible to the choice of countries or outliers. However, the relationship between foreign debt and savings seems to depend on debt accumulation gaining significance only after passing a country specific threshold.


Okafor Luke Emeka, Tyrowicz Joanna
foreign debt domestic savings Latin America Africa MIU
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