The variable work hours refers to time spent on paid work.
Work flexibility included variable work hours (i.e. the ability to change start and finish times) and family-friendly conditions including time-in-lieu arrangements and the ability to take time off to attend to caring responsibilities.
These occupations also represented a range of working conditions, such as variable work hours and multiple employers for domestic workers; daily wage labour for construction workers and some street vendors; self-employment and flexible working hours for some street vendors; and, unionization and industrial labour regulation for garment factory workers.
In an excess zero component, the variables Working hours and Leave are used as predictors of values exceeding zero in all four regression models.
However, when the variable of total work hours is controlled for, the coefficient of the employment status decreases from 0.297 to 0.176 and is no longer statistically significant.
The variable of total work hours is added in model 4 to estimate how work-family conflict affects subjective well-being and examine the mediation effect of total work hours between employment status and subjective well-being.
As covariates, we considered demographics (age, cohabitation), job variables (job group, work hours, shift) and stressful life events, because previous studies have shown that they are related to depressive symptoms, working conditions or both.
Work hours variables measuring many hours (>60, 51-60 hours-per-week) were strongly and positively associated with dissatisfaction, similar to the 1996-97 findings.
Using STATA MP12.1, univariable and multivariable multilevel logistic regression models were built to examine the association between the presence of an active lesion at any of the four anatomical sites (neck, girth, back, tail) and the explanatory variables: age, working hours, contact material, break, and saddle weight.
We did not include the number of working hours as an independent variable, since the number of work hours is already incorporated in the WLQ score for at-work productivity loss.
The midpoint of each category was used to ease readability of the estimated coefficients of work hours; the variable was scaled to working hours per day (assuming 5 working days per week) in continuous form.
