Participants will be mailed a 30 minute baseline questionnaire to collect the following demographic information and covariates: recent or current symptoms of an MSD; occupational history; current job information (e.g., hours per clinic per week, hours scaling per week, glove type used); medical history including previous musculoskeletal injury or illness, pain medication usage, systemic diseases related to MSDs; tobacco use; personal demographics; and psychosocial factors. The investigators plan to use the standardized Job Content Questionnaire to measure job control, psychological demands, job strain, social support, and job satisfaction (Karasek et al., 1998; Rempel et al. 2006).