Understanding the health outcomes of the work pattern transformation in the age of gig economy: an investigation of the association between multiple-job holding and health status in the United States and China.

OBJECTIVE: The Slash (multiple-job holders) become increasingly prevalent in the labor force under the context of fast-developing gig economy and other emerging employment forms active on platforms. However, health outcomes of multiple-job holding have not received sufficient research treatment and is far from reaching consensus. This study provides an empirical investigation on the influence of multiple-job holding on individual health. METHOD: This study uses data from China Health and Retirement Longitudinal Study (CHARLS-2015 survey) which covers 28 provinces/municipalities in China and tracks work and health status of the population aged over 45 years using stratified random sampling (N = 12,659-16,526 for examinations of different types of health status (i.e., chronic conditions/body aches/depression, in study 1), and from the Survey of Household Economics and Decision-making (SHED-2019) which is conducted by the Federal Reserve Board of the United States and documents economic behavior and related risks of the population aged over 18 years (N = 6603 for baseline model and N = 10,718 for supplementary test, in study 2). To address the potential endogeneity of multiple-job holding, the instrumental variable (IV) regressions are conducted to ensure the validity of results. The implementation of Study 1 and 2 in different national context could help test the generalization of research results. RESULTS: Compared with non-multiple jobs holding, multiple-job holding with only one additional job is associated with better health status (i.e., less chronic conditions and body aches, a lower level of depression shown in study 1, and better self-assessed general health shown in study 2), however, multiple-job holding with at least two additional jobs turns to be associated with worse health status (shown in both study 1 and 2). These results show that the optimal level of multiple-job holding could be featured with one additional job besides the primary job. CONCLUSION: Multiple-job holding, with different structures, has both bright and dark side for health outcomes. To maintain an optimal level of multiple-job holding could benefit individual health.

Assessment of dual practice among physicians in Cambodia.

BACKGROUND: Dual practice and multiple job holding are widespread among health workers throughout the world. Although dual practice can help the financially strained public sector retain skilled workers, there are also potential negative consequences if it is not regulated. In Cambodia, there is substantial anecdotal evidence of dual practice among physicians but there is very little data on the extent and prevalence of the practice. This study was conducted by the University of Health Sciences (UHS) to gain insight in to the employment practices of UHS alumni. Results from this survey may help to inform policymakers in rational planning for future health system development related to capacity building and regulation of human resources for health. METHODS: Data were collected from a self-administered survey of UHS graduates who graduated between 1999 and 2012. A total of 162 medical graduates were randomly sampled from a total of 1867 medical graduates between 1999 and 2012. Contacted individuals were asked to complete a written structured questionnaire regarding demographic characteristics, current employment and types of employment, compensation, and job satisfaction. The response rate of graduates sampled was 49% (79 completed questionnaires). The low response rate was primarily due to the difficulty in locating individuals. RESULTS: Of 79 respondents, 96% were currently employed at the time of the survey. However, only 63 of the respondents (80%) were working in the healthcare sector. The 16 respondents (20%) not working in healthcare were excluded from further analyses since they are not relevant to dual practice analysis. The vast majority (87%) of respondents are public sector employees (61.9% in public sector only and 25.4% in both public and private sector). 12.7% of respondents only work in the private sector. Almost half (47.6%) of respondents hold more than one job. For income satisfaction, physicians employed in both sectors have higher satisfaction than physicians employed in the public sector only. CONCLUSIONS: As policymakers in Cambodia consider new approaches to regulation of the practice, it is important to know the context of the practice, the benefits to the healthcare system, and the costs. Recognizing the high prevalence of multiple job holding in Cambodia, as evidenced in our survey of UHS medical graduates, contributes to the discussion as important information that can be used toward meaningful reform.

Dual practice and multiple job holding among Iranian general practitioners: Rate and effective factors.

BACKGROUND: Physician's dual practice is a common phenomenon in both developing and developed countries. This study aimed to investigate the rate and factors affecting the dual practice of general practitioners (GPs) as the most important primary care providers in Iran. METHODS: This cross-sectional study was conducted on the data of 666 Iranian GPs, derived from a national survey. In this work, a researcher-made checklist was used to collect the required information. Multinomial logistic regression was used to examine the factors affecting concurrent employment in both public and private sectors and the factors affecting employment in more than one place (either public or private). RESULTS: About 23.51% of the GPs were only working in the public sector, and 57.84% only in the private sectors. Also, 18.65% were working in both the private and public sectors. Results also indicated that 26.17% of the GPs were working in two or more places (whether public or private). Male GPs (p < .1) as well as the GPs with higher earnings expectations (p < .01) were more likely to have dual practice. Besides, the GPs working in small towns and villages (compared with Tehran, as capital of Iran; p < .05) were less likely to have dual practice. Gender (male) and earnings expectations had a significant effect on working in more than one place (p < .01). CONCLUSION: The most important and significant factor affecting GPs' dual practice in Iran was their financial expectations. Thus, appropriate policies to modify physicians' income expectations and reforms such as improving tariffs setting should be adopted in the health systems.

The third shift: Multiple job holding and the incarceration of women's partners.

A large body of research documents the sensitivity of women's employment to changing family circumstances, but we know little about the relationship between partner incarceration-a common family transition in the lives of disadvantaged women-and employment. Despite reasons to suspect that changes in resources associated with incarceration have consequences for the employment of family members, previous research suggests that partner incarceration does not influence the number of hours women work at their main jobs. This paper uses data from the Fragile Families and Child Wellbeing Study (N = 3835) to examine how partner incarceration is associated with multiple job holding, an alternative strategy for increasing earnings. Results show that women with incarcerated partners are more likely to work multiple jobs than women in otherwise similar circumstances, suggesting partner incarceration is linked to a "third shift"-to additional employment on top of the paid work and caregiving women already do.

Understanding nurses' dual practice: a scoping review of what we know and what we still need to ask on nurses holding multiple jobs.

BACKGROUND: Mounting evidence suggests that holding multiple concurrent jobs in public and private (dual practice) is common among health workers in low- as well as high-income countries. Nurses are world's largest health professional workforce and a critical resource for achieving Universal Health Coverage. Nonetheless, little is known about nurses' engagement with dual practice. METHODS: We conducted a scoping review of the literature on nurses' dual practice with the objective of generating hypotheses on its nature and consequences, and define a research agenda on the phenomenon. The Arksey and O'Malley's methodological steps were followed to develop the research questions, identify relevant studies, include/exclude studies, extract the data, and report the findings. PRISMA guidelines were additionally used to conduct the review and report on results. RESULTS: Of the initial 194 records identified, a total of 35 met the inclusion criteria for nurses' dual practice; the vast majority (65%) were peer-reviewed publications, followed by nursing magazine publications (19%), reports, and doctoral dissertations. Twenty publications focused on high-income countries, 16 on low- or middle-income ones, and two had a multi country perspective. Although holding multiple jobs not always amounted to dual practice, several ways were found for public-sector nurses to engage concomitantly in public and private employments, in regulated as well as in informal, casual fashions. Some of these forms were reported as particularly prevalent, from over 50% in Australia, Canada, and the UK, to 28% in South Africa. The opportunity to increase a meagre salary, but also a dissatisfaction with the main job and the flexibility offered by multiple job-holding arrangements, were among the reported reasons for engaging in these practices. DISCUSSION AND CONCLUSIONS: Limited and mostly circumstantial evidence exists on nurses' dual practice, with the few existing studies suggesting that the phenomenon is likely to be very common and carry  implications for health systems and nurses' welfare worldwide. We offer an agenda for future research to consolidate the existing evidence and to further explore nurses' motivation; without a better understanding of nurse dual practice, this will continue to be a largely 'hidden' element in nursing workforce policy and practice, with an unclear impact on the delivery of care.

Experiences with multiple job holding: a qualitative study among Dutch older workers.

BACKGROUND: Multiple job holding (MJH) is a common and growing phenomenon in many countries. Little is known about experiences with MJH among older workers. The objective of the present study is to gain insight in experiences with MJH among Dutch workers aged 45 years and older. METHODS: Multiple job holders were selected from the Study on Transitions in Employment, Ability, and Motivation (STREAM), a Dutch cohort study among persons aged 45 years and older. Purposive sampling was applied to assure heterogeneity regarding gender, educational level, health, financial situation, willingness to continue MJH, and type of MJH (only jobs as employee or also being self-employed). Interviews were conducted until data saturation occurred. Fifteen multiple job holders participated in this study (eight men, seven women). Interviews were digitally recorded, transcribed verbatim and analyzed, along with field notes, using thematic content analysis. The data were openly coded, after which codes were aggregated into themes, which formed a thematic map. In each phase of the analysis at least two researchers were involved to increase reliability. RESULTS: Experiences with MJH varied from positive to negative. They were influenced by characteristics of individual jobs, e.g. social support at work, as well as characteristics of the combination of jobs, e.g. positive spill-over effects, and conflicts between work schedules. The personal context of multiple job holders, e.g. their age, or reason for MJH, affected how work characteristics influenced experiences. Negative experiences with one job often coincided with negative experience in the other job(s), and problems in the personal context. Some multiple job holders were able to make changes to their situation when desired. For some, this was not possible, which augmented their negative experience. CONCLUSIONS: This study adds to existing knowledge that experiences with MJH are not only influenced by work characteristics but also by the personal context of multiple job holders, and that some workers are able to change their situation when desired, while others are not. Future research should study how different combinations of work and personal characteristics influence sustainable employability of multiple job holders. Policies facilitating life-long learning could increase opportunities to change the MJH situation when desired.

The longitudinal association between multiple job holding and long-term sickness absence among Danish employees: an explorative study using register-based data.

PURPOSE: Multiple job holding (MJH) is common in many countries, but little is known about its (health) consequences. Our aim is to explore the longitudinal association between MJH and long-term sickness absence (LTSA) among Danish employees. METHODS: We included employees (N = 8968) who participated in the Danish Work Environment Cohort Study (DWECS), based on a representative sample of the Danish working population. Three dichotomous independent variables were created: MJH in general, combination MJH (i.e. second job as employee) and hybrid MJH (i.e. self-employed in second job). LTSA (≥5 weeks) was measured using the Danish Register for Evaluation of Marginalization during 78 weeks of follow-up. Potential confounders included demographics, health, and work characteristics. Logistic regression analyses were performed to study whether LTSA was associated with MJH in general, combination MJH, and hybrid MJH. Interaction effects for gender, age, total working hours per week (≤37 or >37 h a week), and shift work were tested. RESULTS: In total, 11.7% (N = 1048) of the respondents reported having multiple jobs and 7.6% (N = 678) experienced LTSA during follow-up. After adjustment for confounders, no significant association between LTSA and MJH in general (OR = 0.82), combination MJH (OR = 0.81), or hybrid MJH (OR = 0.83) was found. Among employees working more than 37 h per week, combination MJH was associated with a higher likelihood of LTSA (OR = 1.50). CONCLUSIONS: We did not find evidence for an increased likelihood of LTSA among multiple job holders. Future research should study the likelihood of LTSA among subgroups of multiple job holders, e.g. those working long hours.

Multiple Job Holding, Job Changes, and Associations with Gestational Diabetes and Pregnancy-Related Hypertension in the National Birth Defects Prevention Study.

We used National Birth Defects Prevention Study data to investigate associations between working patterns shortly before and during pregnancy and gestational diabetes and pregnancy-related hypertension. We analyzed working patterns (multiple-job holders, job changers, single-job holders) during the three months before and during pregnancy for 8140 participants who delivered a live-born child without a birth defect. "Multiple-job holders" worked more than one job simultaneously, "job changers" worked more than one job with no overlap, and "single-job holders" (referent) worked one job. We used multivariable logistic regression to estimate associations between working pattern and each outcome, adjusting for maternal age and educational attainment at delivery. We explored effect measure modification by household income, peak weekly working hours, and maternal race/ethnicity. Multiple-job holders had higher odds of gestational diabetes (adjusted odds ratio [aOR]: 1.5; 95% confidence interval [CI]: 1.1-2.1) and pregnancy-related hypertension (aOR: 1.5; 95% CI: 1.0-2.2) compared with single-job holders. Multiple-job holders with a household income of more than 30,000 USD per year, 32-44 peak weekly working hours, and from racial/ethnic minority groups had higher odds of gestational diabetes compared with single-job holders in respective categories. Detailed occupational information is important for studies of occupation and maternal health.

Trajectories of precarious employment and the risk of myocardial infarction and stroke among middle-aged workers in Sweden: A register-based cohort study.

BACKGROUND: The aim is to identify trajectories of precarious employment (PE) over time in Sweden to examine associations of these with the subsequent risk of myocardial infarction (MI) and stroke. METHODS: This is a nation-wide register-based cohort study of 1,583,957 individuals aged 40 to 61 years old residing in Sweden between 2003-2007. Trajectories of PE as a multidimensional construct and single PE components (contractual employment relationship, temporariness, income levels, multiple job holding, probability of coverage by collective agreements) were identified for 2003-2007 by means of group-based model trajectories. Risk Ratios (RR) for MI and stroke according to PE trajectories were calculated by means of generalized linear models with binomial family. FINDINGS: Adjusted estimates showed that constant PE and borderline PE trajectories increased the risk of MI (RR: 1·08, CI95%:1·05-1·11 and RR:1·13, CI95%: 1·07-1·20 respectively) and stroke (RR:1·14, CI95%: 1·10-1·18 and HR:1·24, CI95%: 1·16-1·33 respectively) among men. A higher risk of stroke in men was found for the following unidimensional trajectories: former agency employees (RR:1·32, CI95%:1·04-1·68); moving from high to a low probability of having collective agreements (RR: 1·10, CI95%:1·01-1·20). Having constant low or very low income was associated to an increased risk of MI and Stroke for both men and women. INTERPRETATION: The study findings provide evidence that PE increases the risk of stroke and possibly MI. It highlights the importance of being covered by collective bargaining agreements, being directly employed and having sufficient income levels over time. FUNDING: The Swedish Research Council for Health, Working Life and Welfare, no. 2019-01226.

Negotiating markets for health: an exploration of physicians' engagement in dual practice in three African capital cities.

Scarce evidence exists on the features, determinants and implications of physicians' dual practice, especially in resource-poor settings. This study considered dual practice patterns in three African cities and the respective markets for physician services, with the objective of understanding the influence of local determinants on the practice. Forty-eight semi-structured qualitative interviews were conducted in the three cities to understand features of the practice and the respective markets. A survey was carried out in a sample of 331 physicians to explore their characteristics and decisions to work in public and private sectors. Descriptive analysis and inferential statistics were employed to explore differences in physicians' engagement in dual practice across the three locations. Different forms of dual practice were found to exist in the three cities, with public physicians engaging in private practice outside but also inside public facilities, in regulated as well as unregulated ways. Thirty-four per cent of the respondents indicated that they worked in public practice only, and 11% that they engaged exclusively in private practice. The remaining 55% indicated that they engaged in some form of dual practice, 31% 'outside' public facilities, 8% 'inside' and 16% both 'outside' and 'inside'. Local health system governance and the structure of the markets for physician services were linked to the forms of dual practice found in each location, and to their prevalence. Our analysis suggests that physicians' decisions to engage in dual practice are influenced by supply and demand factors, but also by how clearly separated public and private markets are. Where it is possible to provide little-regulated services within public infrastructure, less incentive seems to exist to engage in the formal private sector, with equity and efficiency implications for service provision. The study shows the value of analysing health markets to understand physicians' engagement in professional activities, and contributes to an evidence base for its regulation.