Judgment of the Court (Sixth Chamber) of 26 June 2001 in Case C-381/99 (reference for a preliminary ruling from the Oberlandesgerichts Wien): Susanna Brunnhofer v Bank der österreichischen Postsparkasse AG (Equal pay for men and women — Conditions of application — Difference in pay — Definition of "the same work" and "work of equal value" — Classification, under a collective agreement, in the same job category — Burden of proof — Objective justification for unequal pay — Effectiveness of a specific employee's work)