8.  On 14 February 1992 the pension fund of the applicant’s employer granted the applicant a full temporary disability pension as from 1 March 1992 until 30 June 1992. Thereafter the period of full pension was prolonged several times. 9.  On 13 June 1997 the pension fund reviewed its previous decision and changed the applicant’s pension into a partial one for an indefinite period beginning on 1 June 1997. The pension fund reasoned its decision by observing that, according to the documents submitted to the pension fund, the applicant’s capability to work could no longer be considered reduced to such an extent as entitling him to a full disability pension. It was also noted that the applicant could be expected to work at least part-time. 10.  The applicant appealed to the Pension Board, which on 4 March 1998 rejected the appeal. The decision was reasoned as follows:
“An employee is entitled to a full disability pension provided that his or her ability to work has continuously been reduced by at least three fifths for a minimum of one year and that this reduction has been caused by an illness, a defect or an injury. The employee’s remaining ability to earn income by carrying out work that would be available to him or her and that he or she could reasonably be expected to perform must be taken into account when assessing the reduction in the employee’s ability to work. Furthermore, the employee’s education, previous activities, age, living conditions and other comparable factors must be taken into consideration.
According to the statements on [the applicant’s] state of health, [the applicant] suffers from depression that has become more difficult during the autumn of 1997. However, [the applicant’s] symptoms must be considered as mild. Therefore, the Pension Board finds [the applicant] still partly capable of working as from 1 June 1997.” 11.  The applicant appealed to the Insurance Court. He referred, inter alia, to several medical statements according to which he was for the time being incapable of working because of his mental illness. On 27 October 1998, the Insurance Court rejected the appeal reasoning the decision as follows:
“[The Insurance Court refers to] the reasons given in the Pension Board’s decision. The new material filed while the case was pending [before the Insurance Court] does not change the evaluation of [the applicant’s] disability.” 12.  The pension fund decided later, on 27 January 1999, to reject the applicant’s renewed application for a full disability pension instead of partial one. The Pension Board rejected the applicant’s appeal on 25 May 1999. The applicant further appealed to the Insurance Court which, on 22 June 2000, found that the applicant’s capability of working had been reduced at least by 60 percent on account of his illness as from the beginning of December 1999, and ordered the pension fund to grant the applicant a full disability pension as from 1 January 1999.