Background: Studies incorporating staff-rated or observational measures of practice leadership have shown that where practice leadership is stronger, active support is better implemented. The study aim was to compare measures of practice leadership used in previous research to determine the extent of their correspondence. Method: A subset of data from a longitudinal study regarding 29 front-line managers working across 36 supported accommodation services in Australia was used. An observed measure of practice leadership, based on an interview and observation of a front-line manager, was compared with ratings of practice leadership completed by staff. The quality of active support was rated after a 2-hour structured observation. Results: Correlations between staff-rated and observed measures were nonsignificant. Only the observed measure was correlated with the quality of active support. Conclusions: This study provides evidence to support using an observational measure of practice leadership rather than reliance on staff ratings.