Purpose -Supply chain security (SCS), as a component of an organization's overall supply chain risk management strategy, has become a critical factor for businesses and government agencies since September 11, 2001, yet little empirical research supports policy or practice for the field. Therefore, this paper develops and presents a categorization of SCS based on existing research. This categorization of supply chain literature can help academics and practitioners to better understand SCS and also helps to identify a research agenda. Setting a research agenda for SCS will help academic and practitioner research focus on critical issues surrounding SCS. Design/methodology/approach -The researchers thoroughly reviewed the literature on SCS, including academic publications, white papers, and practitioner periodicals. The literature was then categorized according to the approach to SCS and the practical implications of this categorization are presented. In addition, this categorization was used to identify research gaps. Findings -This analysis found that SCS needs more attention from the academic community. Like earlier assessments of this literature, this analysis found it to be mainly normative, with little research based on primary data. This paper categorizes the literature into four approaches to SCS: intraorganizational, interorganizational, a combination of intraorganizational and interorganizational, and ignore. This study develops a focused agenda for future, primary, empirical research on SCS.Research limitations/implications -The sources of data for this literature review are secondary. The review sets a research agenda and calls for future empirical testing. Practical implications -Practitioners will benefit from the framework presented here by better understanding approaches to SCS. This comprehensive review discusses the characteristics of SCS in great depth. As other researchers follow the research agenda, practitioners will benefit from the empirical findings and theory building. Originality/value -This paper summarizes the literature on SCS to date, a topic that has grown in importance, yet received little attention from academics. This is the first comprehensive literature review of SCS. It includes a categorization of four possible approaches to SCS. It also distinguishes SCS from supply chain risk, while also recognizing their relationship. It identifies key issues in SCS research and calls for future research.

Multiple regression analysis assumes that one model or theory is relevant for the entire population, yet research has shown that this assumption is often false and may severely limit valid theory development and testing. Latent class regression analysis overcomes this limitation and allows the researcher to identify and develop regression models that are relevant for different segments within the same population. Latent class regression analysis is introduced and is used to analyze truck drivers' intentions to stay with the same firm. This article demonstrates the advantages of testing logistics theory with latent class regression analysis and provides numerous applications for practitioners.

Research on truck driver retention addresses how traditional variables impact drivers’ decisions to stay with a particular carrier, yet many of the traditional research methods have been called into question. Additionally, research is sparse on understanding whether unique driver need‐based segments exist. Therefore, the authors present a theoretical framework and examine an exploratory study for incorporating numerous constructs that pertain to a driver’s intention to drive for a firm. Empirical results indicate that drivers’ value pay, personal safety, and time at home are most important when deciding to remain with a firm. In addition, three unique truck driver need‐based segments were identified. The authors offer retention recommendations based on the specific needs of each segment.

Purpose -The purpose of this paper is to present a newly developed scale useful for measuring supply chain security culture (SCSC), defined as the overall organizational philosophy that creates supply chain security as a priority among its employees through embracing and projecting norms and values to support secure activities and to be vigilant with security efforts. Design/methodology/approach -The approach to developing a scale for SCSC follows the steps presented by Churchill. This includes conducting steps such as: generating items, establishing face and content validity, conducting a pretest to refine items, and validating the scale through an additional data collection so reliability, convergent, discriminant, and predictive validity can be evaluated. Findings -The process yielded a unidimensional, five-item scale with strong psychometric properties. Through empirical verification, this scale is shown to exhibit high levels of reliability and validity. Research limitations/implications -Organizational culture has been a construct of interest in social science research for many years. The new phenomenon of supply chain security has been recently introduced to academics and practitioners. Thus, the presented scale has applications for theory and practice. Limitations of the study include allowing one error term to correlate in the SCSC scale and the resiliency scale, a somewhat low response rate, and no ability to test for common method variance bias. Practical implications -Practitioners will find the presented scale useful in gauging the culture of their respective organizations in terms of supply chain security. A security focused culture is important for organizations to protect their supply chain. Originality/value -The paper provides a useful measurement tool for use in future research addressing the social aspects of security management within the supply chain context.