1. Introduction
The proportion of older persons aged 55 and above is increasing at an unprecedented rate. This observed trend may be in part explained by improvements in the current standard of living and modern medicine [
1,
2]. In fact, life expectancy has increased by more than 6 years within the span of the last two decades (2000–2019; [
3]). Despite an increase in life expectancy, this does not equate to a corresponding increase in quality of life. Indeed, an increase in life expectancy has been associated with increased risk of diseases such as cardiovascular diseases, osteoporosis, hyperlipidemia, cancer, disability, and dementia [
4,
5,
6]. Preventive and nonpharmacological approaches to tackle these issues and improve the quality of life among older adults have consequently garnered significant attention in recent years [
7,
8,
9]. The concept of active ageing embodies the spirit of these nonpharmacological approaches.
The basic tenets that underpin the concept of active ageing have been longstanding in gerontological theories. One such example is the Activity Theory of Ageing [
10,
11]. In the seminal work by Havighurst and colleagues [
10,
11], the Activity Theory of Ageing examines the experience of an elderly person when he/she encounters biopsychosocial decline in one’s later years (e.g., retirement, role loss, and death). Cavan and colleagues [
10] posited that reduction in well-being was largely due to maladaptive adjustments to said decline. In other words, in a world where activity-oriented, work-related lifestyle serves as a standard of well-being, an important issue of life in one’s later years is the dissociation caused when one’s present state of living no longer conforms to this standard [
12]. Hence, a solution to this problem is to adjust one’s life to reflect this standard again, taking on a number and variety of “productive” roles. The theory asserts a positive relationship between older adult’s participation in social activities and life satisfaction, stemming from the underlying notion that beyond from physical decline, psychosocial needs remain [
13]. Consequently, older adults would thrive in group and community affairs, which are unfortunately often blocked by social norms such as forced retirement [
14].
1.1. Older Adult Employment and Well-Being
Older adult employment has been posited to carry a host of benefits, beyond productivity, and economic gain [
15,
16]. Using a sample of close to 8000 mid-to-older adults, growth curve models assessing the effects of productive activities on mental health trajectories revealed protective effects [
17]. Specifically, full-time employment and low-level volunteering had an independent protective effect against decline in psychological well-being, with the joint participation of both resulting an in even stronger protective effect [
17]. Similarly, research on older adult employment and well-being have suggested that working beyond traditional retirement ages may yield mental health benefits. In a systematic literature review by Maimaris and Lock [
18], five of the seven cross-sectional studies examined reported improved mental health among individuals who had engaged in work beyond retirement age; the other two studies reported non-significant benefits. Of the three longitudinal studies reviewed, all had reported significant benefits of work on mental health [
18]. Despite these promising findings, more recent literature has been mixed. In a recent systematic literature review by Baxter and colleagues [
19] examining the effects of employment beyond traditional working age on mental health, of the five studies examined: one had reported positive effects, three a neutral effect, and two an adverse effect. These mixed findings may be a result of confounding variables such as individual lifestyle, socioeconomic status, and personality factors [
18], with different studies having controlled for a different set of confounds. Further, individual domains of well-being may be associated with employment differently [
20,
21]. Examining the effects of employment on well-being as a singular construct may fail to capture a potentially more nuanced relationship.
Research has also suggested a reserve direction in the employment–well-being relationship; that is, well-being influences employment. The reverse causal or selection hypothesis presupposes that unemployment may be a consequence of poor mental health and well-being. In a meta-analysis involving 49 independent samples, poor mental health was shown to have a significant negative effect on re-employment [
22]. Similarly, poor well-being has been associated with poorer job performance and increased likelihood of future unemployment [
23,
24]. Indeed, poorer well-being may lead to unsatisfactory job behaviors such as absenteeism, leading to dismissal [
25]. Contrary to these findings, however, several studies have suggested the opposite effect of poorer well-being predicting employment [
26,
27]. Results indicated that a greater loss in well-being motivated efforts towards re-employment so as to reinstate one’s sense of well-being [
26]. In line with this observation, when the unemployment rate among an individual’s reference group was higher, there was a smaller drop in well-being among the unemployed, and a reduction in job search intensity [
27]. That is, for the unemployed, when relevant others were also jobless, there was a smaller drop in well-being and a reduced intensity in job search, in comparison to when relevant others were employed.
The current body of literature examining the effects of older adult employment on well-being has been mixed. Literature on the reverse effect of well-being on employment have also been mixed. In order to better understand the relationship between older adult employment and well-being, and considering potential policy and intervention implications, this necessitates further examination.
1.2. The Current Study
Three key challenges in the current body of literature have prompted this study. First, the mixed findings on the effects of older adult employment on well-being suggests the need for more careful methodology in teasing out this relationship. Well-being is a result of a host of factors, such as lifestyle, personality, and socioeconomic status. Accurately examining the impact of employment on well-being poses a challenge, given the number of potential factors involved and the individual differences in these factors. While studies have attempted to control for socioeconomic variables, demographic factors, and pre-existing medical conditions [
28,
29,
30,
31,
32], no gerontology study to our knowledge had controlled for multiple trait-like constructs such as personality, temperament, childhood socioeconomic status, etc. These variables may very well confound said relationship, contributing to the mixed results in the literature. Second, among studies that explored the reverse direction of well-being on employment, these findings have also been mixed. Once again, these studies had not controlled for multiple trait-like constructs. These variables may likewise confound the effects of well-being on employment. Thus, a robust methodology using more stringent controls for potential confounds of this reverse relationship is warranted. Third, as the subdomains of well-being may relate to employment differently, exploring the association between employment and well-being as a single construct may fail to capture these nuances. Hence, in order to understand the relationship between older adult employment and well-being in its entirety, investigating how employment may be related to different subdomains of well-being is imperative.
3. Results
Means, standard deviations, and zero-order correlations for social well-being, psychological well-being, and subjective well-being may be found in
Appendix A (
Table A1,
Table A2 and
Table A3). Zero-order correlations revealed small to medium correlations between the various domains of social well-being and across timepoints (
r = 0.06 to 0.58). A similar pattern was observed among psychological (
r = 0.05 to 0.62) and subjective well-being domains (
r = 0.34 to 0.64).
3.1. Employment and Social Well-Being
Meaningfulness of Society (Social Coherence). The RI-CLPM with employment and meaningfulness of society was found to be of good fit (χ2(31) = 80.681, p < 0.05; CFI = 0.963, TLI = 0.906, RMSEA = 0.048, 90% CI (0.035, 0.061)). Results indicate a significant autoregressive influence of employment between timepoint 1 and 2 (βT1T2 = 0.32, p < 0.001) and timepoint 2 and 3 (βT2T3 = 0.28, p <0.001). Results also indicated a significant cross-lagged influence. Meaningfulness of society at timepoint 2 was found to predict employment at timepoint 3 (βT2T3 = 0.03, p = 0.015). No other paths were significant.
Social integration. The RI-CLPM with employment and social integration was found to be of good fit (χ2(31) = 81.536, p < 0.05; CFI = 0.961, TLI = 0.902, RMSEA = 0.048, 90% CI (0.036, 0.061)). Results indicate a significant autoregressive influence of employment across timepoints (βT1T2 = 0.33, βT2T3 = 0.29, p < 0.001). Results also indicated a significant autoregressive influence of social integration across timepoints (βT1T2 = 0.18, p = 0.015; βT2T3 = 0.19, p = 0.044). No other paths were significant.
Social actualization. The RI-CLPM with employment and social actualization was found to be of good fit (χ2(31) = 81.173, p < 0.05; CFI = 0.955, TLI = 0.886, RMSEA = 0.048, 90% CI (0.036, 0.061)). Results indicate a significant autoregressive influence of employment across timepoints (βT1T2 = 0.34, βT2T3 = 0.29, p < 0.001). Results also indicated a significant autoregressive influence of social actualization between timepoint 1 and 2 (βT1T2 = 0.25, p < 0.001). No other paths were significant.
Social contribution. The RI-CLPM with employment and social contribution was found to be of good fit (χ2(31) = 82.324, p < 0.05; CFI = 0.962, TLI = 0.905, RMSEA = 0.049, 90% CI (0.036, 0.062)). Results indicate a significant autoregressive influence of employment across timepoints (βT1T2 = 0.33, βT2T3 = 0.28, p < 0.001). Results also indicated a significant autoregressive influence of social contribution across timepoints (βT1T2 = 0.25, βT2T3 = 0.25, p < 0.01). No other paths were significant.
Acceptance of Others (Social Acceptance). The RI-CLPM with employment and acceptance of others was found to be of good fit (χ2(31) = 78.216, p < 0.05; CFI = 0.957, TLI = 0.891, RMSEA = 0.047, 90% CI (0.034, 0.060)). Results indicate a significant autoregressive influence of employment across timepoints (βT1T2 = 0.33, βT2T3 = 0.29, p < 0.001). Results also indicated an autoregressive influence of acceptance of others between timepoint 1 and 2 (βT1T2 = 0.19, p < 0.01). No other paths were significant.
Results from RI-CLPM analyses of employment and social well-being maybe found in
Appendix B (
Table A4).
3.2. Employment and Psychological Well-Being
Positive relations with others. The RI-CLPM with employment and positive relations with others was found to be of good fit. (χ2(31) = 92.540, p < 0.05; CFI = 0.956, TLI = 0.889, RMSEA =0.053, 90% CI (0.041, 0.066)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.33, βT2T3 = 0.29, p < 0.001). No other paths were significant.
Self-acceptance. The RI-CLPM with employment and self-acceptance was found to be of good fit. (χ2(31) = 97.316, p < 0.05; CFI = 0.950, TLI = 0.875, RMSEA = 0.055, 90% CI (0.043, 0.068)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.32, βT2T3 = 0.29, p < 0.001). Results also indicated a significant autoregressive influence of self-acceptance between timepoint 2 and 3 (βT2T3 = 0.21, p < 0.01). No other paths were significant.
Autonomy. The RI-CLPM with employment and autonomy was found to be of good fit. (χ2(31) = 75.044, p < 0.05; CFI = 0.959, TLI = 0.897, RMSEA = 0.045, 90% CI (0.032, 0.058)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.33, βT2T3 = 0.28, p < 0.001). No other paths were significant.
Personal growth. The RI-CLPM with employment and personal growth was found to be of good fit. (χ2(31) = 86.057, p < 0.05; CFI = 0.956, TLI = 0.890, RMSEA = 0.051, 90% CI (0.038, 0.063)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.32, βT2T3 = 0.28, p < 0.001) across timepoints, and a significant autoregressive influence of personal growth between timepoint 2 and 3 (βT2T3 = 0.20, p < 0.01). Results also indicated a significant cross-lagged influence. Personal growth at timepoint 1 was found to predict employment at timepoint 2 (βT1T2 = 0.04, p < 0.01), and personal growth at timepoint 2 was found to predict employment at timepoint 3 (βT2T3 = 0.02, p = 0.035). No other paths were significant.
Environmental mastery. The RI-CLPM with employment and environmental mastery was found to be of acceptable fit. (χ2(31) = 95.268, p < 0.05; CFI = 0.944, TLI = 0.860, RMSEA = 0.055, 90% CI (0.042, 0.067)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.33, βT2T3 = 0.29, p < 0.001). Result also indicate a significant autoregressive influence of environmental master from timepoint 1 to timepoint 2 (βT1T2 =0.17, p =0.009). No other paths were significant.
Purpose in life. The RI-CLPM with employment and purpose in life was found to be of good fit. (χ2(31) = 79.635, p < 0.05; CFI = 0.955, TLI = 0.888, RMSEA = 0.048, 90% CI (0.035, 0.061)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.33, βT2T3 = 0.29, p < 0.001). Results also indicate a significant autoregressive influence of purpose in life from timepoint 2 to timepoint 3 (βT2T3 = 0.21, p = 0.002). No other paths were significant.
Results from RI-CLPM analyses of employment and psychological well-being are presented in
Appendix C (
Table A5).
3.3. Employment and Subjective Well-Being
Positive Affect. The RI-CLPM with employment and positive affect was found to be of acceptable fit. (χ2(31) = 106.079, p < 0.05; CFI = 0.945, TLI = 0.861, RMSEA = 0.059, 90% CI (0.047, 0.072)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.33, βT2T3 = 0.30, p < 0.001). Results also indicated a significant autoregressive influence of positive affect between timepoint 2 and 3 (βT2T3 = 0.43, p < 0.001). No other paths were significant.
Negative Affect. The RI-CLPM with employment and negative affect was found to be of adequate fit. (χ2(31) = 109.253, p < 0.05; CFI = 0.938, TLI = 0.844, RMSEA = 0.060, 90% CI (0.048, 0.072)). Results indicate a significant autoregressive influence of employment (βT1T2 = 0.33, βT2T3 = 0.29, p < 0.001). No other paths were significant.
Results from RI-CLPM analyses of employment and subjective well-being are presented in
Appendix D (
Table A6).
5. Study Strengths and Limitations
To our best knowledge, the present study is one of the first studies to explore the longitudinal association of employment and well-being among older adults. Because we used a RI-CLPM, we were able to study associations in a bi-directional manner, while controlling for stable within-person factors. This study also explored a more nuanced relationship between employment and the different well-being domains.
The study has several limitations. First, this study does not distinguish between the type of occupation held. It may be possible for the reported findings to different across different types of occupations. For example, older adults working in jobs that help the less fortunate may report greater sense of well-being at a later timepoint, an observation similar to the effects of volunteerism [
79]. In the same vein, it may be possible that increased meaningfulness of society and personal growth lead to employment in specific types of occupation. Second, this study does not distinguish between job characteristics. It may be possible that different job characteristics, even within the same occupation, may exert different influences on well-being, and vice versa. For example, occupations with exposure to trauma (e.g., bullying at work, or handling corpses) may result in poorer well-being at a later timepoint [
80]. Third, although this study looked at employment in relation to various well-being domains, these domains are by no means exhaustive. For example, another domain of well-being not considered in this study is spirituality and religiosity well-being [
81]. It may be possible that employment exerts a certain influence over other domains of well-being, and vice versa. An interaction between type of occupation, job characteristics, and other domains of well-being may also be possible. Forth, the present study examined employment and well-being among predominantly white older adults living in the United States. This relationship may differ cross-culturally [
82,
83].