Sec. 309.3. Presumption of regularity of authorized leave for medical reasons

For the purposes of this Part, a leave of absence without pay, granted for medical reasons, must be in writing and signed by the appropriate appointing authority. Such leave shall presumptively be deemed to be authorized and to comply with the established administrative procedures of the appointing authority, in the absence of substantial evidence to the contrary, for any purpose relating to the qualification of an applicant for retirement and death benefits provided by the Retirement and Social Security Law.