Examples of specialized experience include knowledge of a wide range of in-depth employee relations concepts, principles, practices, and legal and regulatory requirements sufficient to provide a broad expertise in advising senior management and supervisors on a myriad of complex and frequently contentious issues; Knowledge of complex concepts, principles, practices, and case law regarding third party powers and procedures sufficient to research facts, legal precedents, and define legal and factual parameters/issues of cases; assist in the preparation, maintenance, and filing of necessary documents and files; and represent management before third parties in quasi-judicial boards and commissions. SPECIALIZED EXPERIENCE GS-12: knowledge of a wide range of in-depth employee relations concepts, principles, practices, and legal and regulatory requirements sufficient to provide a broad expertise in advising senior management and supervisors on a myriad of complex and frequently contentious issues; Knowledge of complex concepts, principles, practices, and case law regarding third party powers and procedures sufficient to research facts, legal precedents, and define legal and factual parameters/issues of cases; assist in the preparation, maintenance, and filing of necessary documents and files; and represent management before third parties in quasi-judicial boards and commissions.