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Although there is a plethora of literature that supports the existence of a technological bias in the US and Europe, exploring such a subject in the developing countries is still relevant and very little processed. This article is part of the perspective that involves examining and bringing additional insight to the phenomenon of the technological change skewed in the Tunisian context. Estimating a multinomial logit model directed to 902 employees generated very original results. First, these results confirm the existence of a technological bias in favour of skilled workers in the Tunisian labour market. However, it is no longer the access or the intensive use of ICT at work that privileges some employees and not others, in terms of pay, but rather the employees' digital skills which contribute to rising inequality. Even more, it is the ability to get, select, process and evaluate information based on the specific needs and capacity to use it to achieve specific objectives, and not the simple manipulation of digital technologies and structures, that are at the core of the problem. Finally, the organizational change also contributes to the amplification of the existing wage disparities. Actually, the more independent the employee is in carrying out his tasks and works per project, the higher the probability of earning a high salary vs low and medium salary. However, several other types of organizations do not have any significant positive effect on the wage rise. This reflects a weakness in the labour organization in the Tunisian firms.

This paper analyzes the transitional dynamics of an endogenous growth model with physical capital, human capital and R&D in which both human capital and innovation drives long run growth. The model suggests that the developing economy follows different stages of development. The first phase is characterized by physical capital accumulation. At the second stage, human capital accumulation represents the main engine of long run growth. The third phase is identified by an increasing variety of intermediate good originating from innovation. However, innovation is not assured for poor economies. In this case, permanent support for innovation can lead a sustainable exit from poverty trap.

This paper presents a simple two-period overlapping generations model that contains environmental and health issues. It investigates an intergenerational conflict between old and young generations as regards two defensive expenditures offsetting the influence of a worsening environment represented here by health care and environmental investment. Workers support environmental maintenance while retirees prefer investing in health care. The authors have shown that an increasing support for private health expenditure leads to a higher level of capital accumulation and leads also to a higher level of environmental quality if the maintenance efforts are higher than consumption externalities. JEL D91 J11 Q20

This paper extends a two-period, three sectors overlapping generations' model of endogenous growth where the interactions between financial constraints, innovation and labor supply are studied. The solutions of the model emphasize the important role financial constraints on innovation (induced by high intermediation costs) can play in reducing the economy's growth performance. Inadequate access to finance has adversely affected the investment in knowledge creation activities. The finding also shows that lack of highly educated labor impedes innovation activities not only directly, but also indirectly by altering incentives to undergo training to acquire specialized skills.