The health crisis generated by the COVID-19 pandemic has induced, among other things, an increase in the importance of remote work or teleworking (TL) in the current period. The objective of this research is to identify the economic and social impact of telework in changing the behavior of employees in Romania. The research was conducted approximately one year after the onset of the pandemic until the beginning of the vaccination period in Romania. The research proposed includes three main directions of analysis of the extracted data, which are related to telework efficiency, this being considered one of the most important indicators for a company. In order to obtain conclusive results, we used a mixed methodology, combining results obtained through a survey based on a self-administered electronic questionnaire, with a data mining analysis. Detailed analysis of the groups identified based on work efficiency allowed us to highlight the most common employee profiles. This analysis was doubled by a second classification experiment, which provided us a more detailed analysis of the groups identified based on job satisfaction and highlighted the most common employee profiles. The expansion of telework in various economic areas is a result of adaptation to the new economic and social conditions caused by the COVID-19 pandemic.

This study investigates the predictive contribution of digital infrastructure to GDP per capita growth across 27 European Union Member States over the period 1995–2024, using a balanced panel of 810 country–year observations and an explainable machine learning framework. An XGBoost model trained on six World Bank indicators—fixed broadband subscriptions, internet users, mobile subscriptions, patent applications, R&D expenditure, and secure internet servers—achieves a training R² of 0.804 and a test R² of 0.430 under temporal out-of-sample validation spanning the COVID-19 structural break. TreeSHAP decomposition identifies fixed broadband as the strongest predictor of model-estimated GDP per capita growth (mean |SHAP| = 0.948; bootstrap rank 1 in 78% of 50 resamples; Friedman Chi-square (5) = 168.16, p < 0.001), providing predictive support for Hypothesis H1. Innovation indicators, represented by patent applications and R&D expenditure, exceed the pre-specified materiality threshold, providing predictive support for H2, while SHAP dependence plots reveal pronounced non-linear threshold patterns consistent with S-curve diffusion theory, supporting H3. Temporal SHAP decomposition identifies three structural phases: broadband dominance (1995–2007), crisis-induced reconfiguration (2008–2013), and quality convergence (2014–2024). The framework reconciles contradictory findings from prior literature by visualizing the complete functional form of the broadband–growth relationship without imposing a parametric specification.

Economic and social cohesion ensures security among the priorities of the European Union, being among the key objectives of European and national policies. Therefore, the center-periphery development model specific to the European economy emphasized the need for public interventions to favor regional growth and convergence, highlighting the importance and complexity of the European cohesion policy. This article starts from the empirical study of cohesion policies at the European level and has as its main purpose the determination of simplification solutions and their implementation in favor of the member states. Among the main scientific research methods used in order to elaborate the paper, we can mention: the comparison method, which was used especially to highlight the differences between the socio-economic situation of the regions and the member states, which joined the European Union in different waves; the historical method - was used to capture the evolution of the Cohesion Policy, the descriptive method - was used to present the programming periods of the Cohesion Policy within the European Union. It can be observed that, at the level of the European Union, the need to coordinate, standardize and simplify the cohesion policy is an often-discussed topic, with the constant aim of identifying new methods to make this policy more efficient. In this context, the new regulations establish tools to ease the life of the executing authorities and beneficiaries, such as, among others: clearer eligibility conditions, simplification of reporting and audit checks, reduction of administrative burdens, unification of rules.