"2.(a) Miss Pratt was absent from work from23 November 1992 , because of illness. At the beginning of March 1993, she signified her intention to return to work, .... 3. It was clear from the evidence of the Applicant that she understood that there was a three months time limit for lodging an application to the Tribunal. She believed that the three months ran from 6 April, .... Furthermore, she thought that the last date of that period was 6 July rather than 5 July. She had known that there was a 14 day period for lodging her internal appeal, and she had fulfilled that requirement, although leaving it until the last day of the 14 days. Her explanation for the delay in lodging her application, once she knew that her appeal had been dismissed, was that the sickness which caused her prolonged absence was depression. She continued to suffer from that depression after her dismissal. She relied upon a letter from her doctor which referred to her condition as "depressive illness" and that the effects of it were that she was unable to sleep at night, unable to think clearly or concentrate, and unable to do her work. She was treated with drugs and referred for psychotherapy. According to that letter, on5 February 1993 a report had been written to her employer's medical adviser and it had been stated that the General Practitioner did not see a return to work "in the immediate future"
"What, however, is abundantly clear on all the authorities is that the answer to the relevant question is pre-eminently an issue of fact for the Industrial Tribunal and that it is seldom that an appeal from its decision will lie. .... It will no doubt investigate what was the substantial cause of the employee's failure to comply with the statutory time limit, .... ."