WASHINGTON (AP) — The Supreme Court seems unlikely to declare that an organizing agreement between a union and a Florida casino may have violated national labor laws.

Justices on Wednesday heard from UNITE HERE Local 355, which wants overturned a decision saying its agreement with Hollywood Greyhound Track, Inc., also known as Mardi Gras Gaming, could be illegal.

The union agreed to help win a gambling ballot initiative legalizing slot machines at racetracks, and agreed not to picket, boycott, or strike. Mardi Gras officials agreed to give the union employee addresses, access to the facility and not ask for a secret ballot election on unionizing.

Labor law says companies cannot give unions that want to represent employees something of value.

Several justices questioned whether ruling against the agreement would disrupt longstanding labor-management practices.

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  • Chief Justice John Roberts

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Sept. 29, 2005

  • Antonin Scalia

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Sept. 26, 1986

  • Anthony Kennedy

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Feb. 18, 1988

  • Clarence Thomas

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Oct. 23, 1991

  • Ruth Bader Ginsburg

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Aug. 10, 1993

  • Stephen Breyer

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Aug. 3, 1994

  • Samuel Alito

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Jan. 31, 2006

  • Sonia Sotomayor

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Aug. 8, 2009

  • Elena Kagan

    <a href="http://www.supremecourt.gov/about/biographies.aspx">Serving since:</a> Aug. 7, 2010