Introduction: Paying attention to the quality of working life is one of the methods in supporting employees to obtain better function in a working environment. Therefore, a valid and reliable scale for measuring this concept is necessary. The aim of this study was to develop and measure the psychometrics properties of "Quality of Work Life Scale in Teachers of Students with Special Needs".

Methods: This was a study with exploratory design conducted in two parts: qualitative and quantitative. Samples included 12 teachers in the qualitative and 232 in the quantitative parts. The samples were selected by convenience method. Data was collected by semi-structured interview. Interviews were analyzed with qualitative content analysis approach. In the quantitative part, for measuring the validity, content validity index, face, construct and concurrent validity, and for the stability reliability of the scale, alpha coefficient and test-retest were used. Data was analyzed by SPSS.16.

Results: The "Quality of Work Life Scale in Teachers of Students with Special Needs" was developed with 53 items. Content and face were confirmed and construct validity showed 7 factors. Concurrent validity (r = 0.22), alpha coefficient (0.89) and test-retest for stability reliability of the scale (0.62-0.92) were confirmed.

Conclusions: The "Quality of Work Life Scale in Teachers of Students with Special Needs" was developed using 53 items and 7 factors, which were valid and reliable. The use of the scale for measuring quality of work life in teachers of students with special needs is suggested.