6 N.Y.3d 769 (2006)
In the Matter of POUGHKEEPSIE PROFESSIONAL FIREFIGHTERS' ASSOCIATION, LOCAL 596, IAFF, AFL-CIO-CLC, et al., Appellants,
In the Matter of POUGHKEEPSIE PROFESSIONAL FIREFIGHTERS' ASSOCIATION, LOCAL 596, IAFF, AFL-CIO-CLC, et al., Appellants,
v.
NEW YORK STATE PUBLIC EMPLOYMENT RELATIONS BOARD et al., Respondents.
Court of Appeals of the State of New York.
Submitted January 9, 2006. Decided January 12, 2006.Motion by Hartsdale Fire District et al. for leave to appear amici curiae on the appeal herein granted only to the extent that the proposed brief is accepted as filed.