The aim of this study was to test the null hypothesis that there is no relationship between working conditions and vocal health. The relationship between the variables overstretched work demands and voice and class size and voice was examined.
Overstretched work demands include long hours of teaching with little opportunity for vocal rest, curriculum teaching of 11 subjects, constraints of recommended number of teaching hours per subject, large class size, 37 hours of playground duty, and absence of advice and support for a voice problem in the workplace.