(c)
A special Government employee shall be subject to subsections (a) and (b) only in relation to a covered matter involving a specific party or parties—
(1)
in which he has at any time participated personally and substantially as a Government employee or special Government employee through decision, approval, disapproval, recommendation, the rendering of advice, investigation, or otherwise; or
(2)
which is pending in the department or agency of the Government in which he is serving.
Paragraph (2) shall not apply in the case of a special Government employee who has served in such department or agency no more than sixty days during the immediately preceding period of three hundred and sixty-five consecutive days.