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Although slack resources and their relationship to performance have been widely studied in the literature, the temporal symmetry of this relationship, and the duration of its effects, are still unknown aspects and are the objective of this paper.

To evaluate this effect, an exploratory study has been designed on a sample of 449 Spanish industrial companies over a period of 12 years, assessing the impact of idle resources on economic and financial profitability. By means of hierarchical regressions, the short- term, medium- term and long-term effects of slack resources have been evaluated.

The results show that the impact on performance depends on the type of resource considered. Available slack has a consistent and positive effect on economic profitability in the short term. Other types of slack show persistent effects on performance, but, in the case of the recoverable slack, with a negative sign that contradicts the benefits provided by these resources. Finally, potential slack only has a permanent effect on financial profitability, but the sign changes depending on the economic context under consideration. There are also differences in the duration of the effects according to the type of resources.

This paper advances the knowledge about the slack-performance relationship over time that has been scarcely studied.

閒置資源與表現的關係從文獻中可見得到廣泛的研究。唯這關係的時間對稱性及其影響的持續期則是未知之數，這正是本研究的目的。

此為一探索性研究，以評估這影響。研究樣本為449 間西班牙工業公司，研究為期12年，目的為評估閒置資源對經濟和財務盈利能力的影響。研究使用層次回歸，評估了閒置資源的短期、中期及長期的影響。

研究結果顯示、閒置資源對表現的影響是視乎被考慮之資源所屬種類的。可用冗餘就短期而言，對經濟盈利能力產生一貫積極的影響。其它種類的閒置資源對表現有持續的影響。但可恢復的冗餘，則與這些資源會帶來好處的現象相矛盾，帶來負面跡象。最後、潛在的冗餘對財務盈利能力只產生持久的影響，唯有關的跡象則會視乎被考慮的經濟環境而改變。致於影響的持續期則會根據資源的種類而有所不同。

本研究使我們更了解冗餘與表現在時間推移上的關係，而探討這關係的研究是罕見的。﹞

The purpose of this paper is to analyse and classify the literature that links slack resources with performance, determining the diversity and coherence within the field, as well as possible future research trends.

Using Web of Science information, a dynamic co-citation and co-word analysis was developed, enabling identification of the theoretical foundations that have accompanied the study of the slack–performance relationship and the research trends associated with these types of resources and their temporal evolution.

Document co-citation and co-word analysis and its evaluation present a growing diversity of literature but which maintains links to the core works, giving coherence to this research field. The key theoretical approaches remain stable over time but with fragmentation of the topics analysed. Results allowed identification of a number of emerging research trends, achieving a level of consolidation within the field, with research fronts linked to those trends.

Slack resources have a large trajectory within the management field. However, it is believed only basic bibliometric analyses of the literature have been made and none has developed an analysis of the evolution. This work is useful not only for incipient researchers to better understand the theoretical bases upon which the current work is based but also for the identification of possible gaps and unanswered research questions. The results complement previous research, with qualitative or meta-analytic perspectives, fundamental in understanding the structure and evolution of this research field.

This study aims to understand which factors determine the corporate performance of Portuguese and Spanish listed companies between 2011 and 2018, also considering the sub-period marked by the presence of the Troika in Portugal, between 2011 and 2014.

To achieve this aim, panel data methodology was used, specifically the generalized method of moments (GMM) estimation method proposed by Arellano and Bond (1991), Arellano and Bover (1995) and Blundell and Bond (1998) for 110 non-financial companies from the Iberian Peninsula.

The results point out different signs and significance of the variables in the companies of the two countries. Regarding the sub-period, our results suggest that the intervention of the Troika in Portugal acted in a very different way from the neighboring country.

This research shows the importance of studying countries individually, even with small dimensions, to reinforce the path that is still necessary for more sustainable companies. Furthermore, when companies have strong governance structures, the harmful contagion from one neighboring country to another may not happen.

The study aims to determine how the relationship among links, fit and sacrifice (dimensions of job embeddedness) influence employees' intention to quit in the case of professionals belonging to Generation Y.

A quantitative correlational study was conducted with a cross-sectional dimension of time. The survey technique was applied through a certified online panel. The sample consisted of 211 members of Generation Y.

It has been verified that the only significant dimension for Generation Y is sacrifice.

It is necessary to extend the study of the dimensions of job embeddedness and their influence on employees' intention to quit in different demographic groups. It would be advisable to conduct longitudinal studies to observe the dynamics of job embeddedness throughout the years.

Organizations concerned with retaining the talent of young professionals can focus on the development of policies and benefits that encourage sacrifice.

The finding that the sacrifice dimension is the one that would reduce the intention to leave for Generation Y will help to ensure that organizations retain the workforce that they value.

The study is important to gain a better understanding of Generation Y behavior. In addition, in response to the demand from the literature, the sample considered only Generation Y with work experience.