Problemas com mapeamento one to many no hibernate

@Entity
@Table(name = "PARAMETRO_CONTESTACAO_HOLDING")
public class ParametroContestacaoHoldingModel implements BaseModel<ParametroContestacaoHoldingVo>{

	private static final long serialVersionUID = 8203837385842966943L;

	@Id
	@Column(name = "ID_PARAMETRO_CONTESTACAO_PK", nullable=false)
	private Integer id;
	
	@ManyToOne(fetch=FetchType.LAZY)
	@Fetch(FetchMode.JOIN)
	@JoinColumn(name="ID_HOLDING_FK", nullable=false)
	private HoldingModel holding;
	
	@Column(name = "FL_STATUS", nullable=false)
	private Integer flStatus;
	
	@Column(name = "NO_USUARIO_INCLUSAO")
	private String noUsuarioInclusao;
	
	@Column(name = "DT_INCLUSAO")
	private Date dtInclusao;
	
	@Column(name = "NO_USUARIO_ALTERACAO")
	private String noUsuarioAlteracao;
	
	@Column(name = "DT_ALTERACAO")
	private Date dtAlteracao;

...

}

@Entity
@Table(name = "PARAMETRO_CONTESTACAO")
public class ParametroContestacaoModel implements BaseModel<ParametroContestacaoVo>{

	private static final long serialVersionUID = 7867056782729632200L;

	@Id
	@Column(name = "ID_PARAMETRO_CONTESTACAO_FK", nullable=false)
	private Integer id;
	
	@Column(name = "CD_PARAMETRO")
	private Integer cdParametro;

...
}