The binding legal principles established are: (1) In determining the substantive fairness of a precautionary suspension, the employer need only prove that at the time of suspension there were allegations of serious offences and the employer reasonably believed the employee's presence might jeopardize investigations or endanger safety - proof of guilt is not required. (2) In unfair labour practice disputes concerning suspension, arbitrators need not and should not determine whether the employee was guilty of the underlying misconduct allegations. (3) The correct test for reviewing the quantum of compensation awarded by an arbitrator under section 194(4) of the LRA is whether the arbitrator exercised discretion capriciously, on wrong principles, with bias, without reason, or adopted a wrong approach - not the Sidumo reasonableness test. (4) In determining just and equitable compensation under section 194(4), all relevant factors must be considered, including not only the employer's conduct but also the employee's conduct both before and after the unfair labour practice. (5) An employee bears responsibility to tender services or return to work when a suspension terminates by operation of contractual provisions.