".......whether the dismissal was fair or unfair, having regard to the reason shown by the employer, shall depend on whether [in the circumstances] (including the size and administrative resources of the employer's undertaking) the employer acted reasonable or unreasonably in treating it [the reason which it took into account] as a sufficient reason for dismissing the employee; and that question shall be determined in accordance with equity and the substantial merits of the case.]"
"4 .......the Respondents carried out a reasonable and thorough investigation and ...... reached their conclusion after giving the consideration to the points raised by the Applicant."