Up to now, research on the topic of workplace stress has shown that work-related stressors, henceforth referred to as job demands, play a vital role with respect to employees’ health and well-being [
1]. According to the Job Demands–Resources (JD–R) model, job demands are defined as aspects of work, which demand effort and associate with physiological/psychological costs [
1]. Notably, most of the studies conducted in this research area have shown that job demands (e.g., work pressure, emotional demanding interactions) tend to relate to ill-being outcomes (e.g., exhaustion, burnout) [
1]. However, subsequent research has also demonstrated that some job demands might positively impact employees’ well-being (i.e., increased motivation, work-engagement) and performance [
2,
3,
4]. Accordingly, scholars have so far identified, examined, and categorized different types of job demands (i.e., challenge, hindrance and/or threat) based on their associations with health-, motivation-, and performance-related outcomes [
3].
Note, however, that recent studies on the topic of work-related stressors have moved beyond the mere use of a priori categorization of job demands to explain inconsistent findings between work-related stressors and diverse outcomes of interest [
3]. Specifically, attention has been placed on employees’ subjective evaluations (i.e., appraisals) of job demands and how these perceptions affect the well-being, growth, and performance of workers [
3,
5,
6,
7]. For instance, research has shown that employees’ subjective appraisals of job demands relate to strain, attitudes, and behavioral intensions [
7]. However, little is in known on the question of whether there are work-related factors, which might contribute to how employees understand and perceive specific job demands [
3,
8]. Which organizational properties might serve as precursors of employees’ demand appraisals? Which work-related boundary conditions might impact employees’ appraisal of these demands? Therefore, the present study seeks (a) to examine predictors of employees’ demand appraisals, and (b) to investigate potential moderating effects of these predictors. Identifying situational factors, which contribute to how employees understand and experience certain job stressors, might help us to manage and navigate the effects of job demands on work-related outcomes [
3,
9].
1.1. Examining Subjective Appraisal of Job Demands
Drawing on the Transactional Theory of Stress (TTS) [
10], a growing number of studies have begun to examine employees’ subjective appraisals of job demands as mechanisms, which may transmit the effects of job stressors on various work-related outcomes [
3]. Subjective appraisal is defined as the individuals’ evaluation of a specific situation (or stressor) with respect to his/her own well-being, and can be further differentiated into challenge (i.e., anticipated mastery and gain) and threat appraisal (i.e., anticipated harm and loss) [
10,
11]. Note that previous research has empirically confirmed that job demands and the appraisal of these demands are two separate constructs [
5]. Whereas “job demands are defined as those physical, psychological, social, or organizational aspects of the job that require sustained physical and/or psychological effort and are therefore associated with certain physiological and/or psychological costs” [
1] (p. 274), appraisal refers to employees’ perceptions of these job stressors [
12]. Accordingly, it has been argued that such appraisal processes might mediate the effects of job demands on work-related outcomes [
13]. Indeed, it has been shown that the associations between job demands and well-being outcomes are mediated, in part, by employees’ appraisals of job demands [
5,
7]. Moreover, subjective appraisal has been found to significantly relate to employees’ coping strategies, affective and behavioral responses, as well as to employees’ working attitudes and performance [
5,
7]. In addition, recent research has shown that challenge and threat perceptions relate to psychological distress, becoming central variables as regards to the prediction of mental health [
14]. Finally, and in line with the TTS, previous studies have shown that employees might appraise job demands simultaneously as having the potential for harm and gain, and that these appraisals may fluctuate from day to day [
5,
7].
Although this stream of research has extended our understanding on the nature and functioning of job demands, knowledge on work-related factors, which might contribute to how employees appraise specific job demands, is scarce [
3,
8]. However, understanding which factors predict employees’ appraisal of work-related stressor as challenging and/or threatening is of theoretical and practical importance [
3]. From a theoretical perspective, it may serve to revise and expand existing frameworks and models of workplace stress, and consequently, to accumulate knowledge in this field of research [
3]. From a practical perspective, it may inform and guide the development of workplace interventions directed at promoting employees’ challenge appraisal and reducing their appraisal of job demands as threatening [
8]. Therefore, the present study seeks to expand research on the topic of workplace stressors by examining determinants of challenge and threat appraisals among matching job resources.
1.2. Job Resources as Determinants of Challenge and Threat Appraisals of Job Demands
We drew from three theoretical frameworks to examine predictors of challenge and threat appraisals of job demands: the Transactional Theory of Stress (TTS) [
10], the Job Demands–Resources model (JD–R) [
1], and the Demand-Induced Strain Compensation model (DISC) [
15]. First, and in line with the TTS, we argue that it is important to consider situation-related factors when examining possible predictors of individuals’ appraisals. According to this theory, contextual factors contribute to the development of challenge and threat appraisals [
10]. Examples of such factors are ambiguity and event uncertainty, which have been theorized to intensify the likelihood of a stressor being appraised as threatening [
10]. In this regard, ambiguity refers to a lack of situational clarity (i.e., lack of information about the situation), whereas event uncertainty implies that characteristics of the environment are not predictable, and therefore cannot be distinguished, noticed, or learned [
10]. However, the notion of predictability is crucial, as it implies having control over the environment [
10]. By transferring this knowledge to a work context, scholars have argued that organizations can reduce uncertainty and lack of clarity by providing employees with information and opportunities for control over their work environment, consequently influencing how employees appraise job demands [
13].
Second, we note that the above-mentioned dimensions of control and provision of information are reflected within specific elements of the JD–R model. Specifically, they constitute prominent examples of job resources [
9]. According to the JD–R model, job resources are defined as “physical, psychological, social, or organizational aspects of the job that are functional in achieving work goals, reduce job demands and the associated physiological and psychological costs, or stimulate personal growth, learning, and development” [
1] (p. 274). Job resources are pivotal characteristics of the job, as they yield positive effects for employees and organizations [
1]. To give an illustration, work-related resources have been found to predict employees’ well-being, job attitudes and performance [
1]. That said, job resources might not only help employees to weaken the negative effects of job demands [
1], but might also influence how employees perceive the demands themselves [
9]. In fact, there is growing evidence for the functioning of job resources as determinants of demand appraisals. To give an illustration, a study examining the role of participative climate (i.e., job resource) in the relation between work intensification (i.e., job demand) and cognitive appraisal found that a favorable participative climate was linked to employees appraising the intensification of work as less hindering [
13]. A cross-lagged study conducted among US Marines has shown that charismatic leadership (i.e., job resource) influences the appraisal of stressors as challenging [
16]. Likewise, a cross-sectional study found that job control and social support significantly related to employees’ appraisal of certain job demands (e.g., time pressure, task complexity, responsibility, interruptions) [
9]. Finally, a recent cross-sectional study identified vertical and horizontal trust at work (i.e., job resources) to predict the appraisal of job demands [
8]. However, research on situational determinants of appraisal at work has just begun, with more research needed to understand the role of work-related factors (i.e., job resources) with respect to employees’ appraisal process [
3].
Third, we argue that it is important to consider corresponding job resources when examining predictors of demand appraisal. Specifically, previous theoretical advancements in research on job stress among human service occupations (e.g., nursing) have proposed that the functioning and interaction of job demands and job resources (and well-being outcomes) might be strongest when the involved concepts derive from the same qualitative domain (i.e., matching principle) [
15]. In particular, and according to the DISC model, we may distinguish between cognitive, emotional, and behavioral (physical) domains [
15]. As such, cognitive demands are more inclined to interact with cognitive resources on cognitive kinds of strain, emotional demands are more inclined to interact with emotional resources on emotional kinds of strain, and physical demands are more inclined to interact with physical resources on physical kinds of strain [
15]. For instance, suppose an employee experiences emotional demanding interactions at work (e.g., being confronted with a complaining patient), which results in negative emotions [
15]. According to this model, emotional resources, such as the support provided by a colleague (e.g., providing sympathy/re-assurance), might best counteract the negative emotions experienced by the employee [
15]. Similarly, if an employee experiences time pressure at work, he/she might best use his/her decision autonomy to reorganize, or even hold up, certain tasks [
15]. That is, job resources should match job demands [
15]. Drawing on this principle, the current study aimed to advance knowledge on work-related factors that predict employees’ demand appraisal by acknowledging the specificity of the underlying qualitative domain so that the job resources under consideration correspond to the job demands at stake.
1.3. The Present Study
The aims of the current study were twofold. The first aim was to identify predictors of nurses’ challenge and threat appraisals of job demands among matching job resources. In particular, and due to their person-centered job, nurses are generally at an increased risk of experiencing strain at work [
17]. Hence, we were interested to examine factors that might affect how nurses appraise work-related stressors. The current study focused on time pressure and role ambiguity (i.e., work-related stressors corresponding to the cognitive dimension), emotional demands (i.e., work-related stressor corresponding to the emotional dimension), and physical demands (i.e., work-related stressor corresponding to the physical dimension). These job demands were chosen, as (a) they reflect qualitative different domains (i.e., cognitive, emotional, physical) [
17], and (b) apply to the nursing occupation [
17,
18,
19,
20,
21].
With respect to the selected job resources, the current study focused on autonomy and participation in decision-making (i.e., work-related resources corresponding to the cognitive dimension), social support (i.e., work-related resource corresponding to the emotional dimension), and physical resources (i.e., work-related resource corresponding to the physical dimension) [
17]. As with the above-mentioned job demands, we chose the present resources as they represent key job resources of nursing staff [
19,
20,
22]. Moreover, these resources are important contextual factors that have been included in previous theoretical frameworks on job stress and are considered to be functional in dealing with job demands [
1,
15,
17]. For instance, autonomy and participation in decision-making refer to the notion of control at work [
1,
9]. In fact, both resources have the potential to boost employees’ control over the work environment, to decrease lack of clarity, and consequently, to positively influence the appraisal of encountered job demands [
13]. Note at this point that autonomy refers to employees’ control as regards to the execution of tasks [
23], whereas participation in decision making implies some degree of influence at work (i.e., shared decisions), which in turn might allow employees to cope with job demands [
8,
13]. Another prominent job resource is social support [
24]. It is one of the most examined work-related resources in studies conducted on the JD–R model [
25]. In this regard, studies have shown that social support relates to health, job satisfaction, work-engagement, and performance [
26,
27]. Lastly, physical resources, such as ergonomic aids, also play a role in dealing with (physical) job demands [
17]. In fact, physical resources have been found to buffer the adverse effects of (physical) demands on employees’ well-being [
17]. For an overview of the connections between our studied variables and their theoretical frameworks, please refer to
Table 1.
Drawing on previous studies examining the role of job resources as predictors of demand appraisal [
8,
13], and bearing in mind the tenants of the DISC model [
15], we believe that corresponding job resources will predict the appraisal of job demands. Based on these theoretical considerations and previous empirical findings, we formulated eight hypotheses. The first four hypotheses address the link between work-related resources and the appraisal of work-related demands as challenging. That is, we expected that employees reporting higher levels of job resources would appraise matching job demands as more challenging.
Hypothesis 1a. Autonomy positively relates to the appraisal of time pressure as challenging.
Hypothesis 1b. Social support positively relates to the appraisal of emotional demands as challenging.
Hypothesis 1c. Physical resources positively relate to the appraisal of physical demands as challenging.
Hypothesis 1d. Participation in decision-making positively relates to the appraisal of role ambiguity as challenging.
The remaining four hypotheses address the link between work-related resources and the appraisal of work-related demands as threatening. That is, we expected that employees reporting higher levels of job resources would appraise matching job demands as less threatening.
Hypothesis 2a. Autonomy negatively relates to the appraisal of time pressure as threatening.
Hypothesis 2b. Social support negatively relates to the appraisal of emotional demands as threatening.
Hypothesis 2c. Physical resources negatively relate to the appraisal of physical demands as threatening.
Hypothesis 2d. Participation in decision-making negatively relates to the appraisal of role ambiguity as threatening.
The second aim was to contribute to an enhanced understanding regarding work-related conditions under which job demands function as challenges and/or threats by examining the above-mentioned domain-specific job resources as potential moderators of the demand–appraisal relationship. Drawing on previous theoretical developments [
10], we would expect that (work-related) resources may affect the association between (work-related) stressors and appraisals in a positive manner. First, studies have provided support for this assumption. For instance, scholars have shown that job resources such as a favorable participative climate weaken the relation between work intensification (i.e., job demand) and the negative appraisal of the demand [
13]. In a similar vein, job control moderated the relation between certain job demands (i.e., task complexity, interruptions, responsibility) and their respective hindrance appraisals [
9]. In addition, a cross-lagged study showed that, under conditions of high charismatic leadership (i.e., job resource), challenge stressors associated more positively with challenge appraisals [
16]. Therefore, and drawing on the previously described matching principle [
15], we expected that domain-specific job resources would moderate the relation between matching job demands and the appraisal of these demands (challenge, threat).
Hypothesis 3a. Autonomy moderates the relation between time pressure and the appraisal of time pressure (i) as challenging ((ii) as threatening), in that the relation is strengthened (weakened) for high levels of autonomy.
Hypothesis 3b. Social support moderates the relation between emotional demands and the appraisal of emotional demands (i) as challenging ((ii) as threatening), in that the relation is strengthened (weakened) for high levels of social support.
Hypothesis 3c. Physical resources moderate the relation between physical demands and the appraisal of physical demands (i) as challenging ((ii) as threatening), in that the relation is strengthened (weakened) for high levels of physical resources.
Hypothesis 3d. Participation in decision-making moderates the relation between role ambiguity and the appraisal of role ambiguity (i) as challenging ((ii) as threatening), in that the relation is strengthened (weakened) for high levels of participation in decision- making.