1. hearsay evidence is admissible in employment tribunal cases.
   
2. employment tribunals have a duty to decide disputed issues of fact. However difficult it may be, it is only in very exceptional circumstances that it is acceptable for a tribunal to fail to make a finding of primary facts

For relevant general notes see Procedure of Employment Tribunals/2004 rules/rule 14 - hearings (general) and/or Procedure of Employment Tribunals/2004 rules/rule 29 - form and content of judgments and/or Vicarious liability .