Maternity/Paternity/Adoption Leave An Employee who is expecting the birth or adoption of a child shall be entitled to maternity/paternity/adoption leave without pay, provided she presents a medical certificate confirming the probable date of confinement, or in the case of adoption, gives the Employer notice of eligibility. Except in extenuating circumstances, the notice shall be submitted in writing at least twenty-eight (28) days in advance of the leave and shall specify the probable date of commencement and the anticipated length of leave. The following conditions shall apply: (a) Leave of Absence for maternity/paternity/adoption shall be for up to eighteen (18) months as requested by the Employee, except in extenuating circumstances when, in the opinion of a medical practitioner, the leave should be further extended. (b) Upon return from such leave, the Employee will resume employment at the same worksite, in the same or in a comparable position prior to the granting of such leave. In the event the Employee on Maternity/Paternity/Adoption Leave is affected by lay off, she shall be afforded access to the provisions of Article 26, Layoff And Work Resumption. (c) Notice of intention to return to work or request for a change of the length of the leave of absence, must be forwarded to the Employer twenty-eight (28) days prior to the expiration of the leave. The Employee shall be entitled to one (1) extension of said leave. However, the entire length of such leave of absence shall not exceed eighteen (18) months. (d) An Employee shall have access to sick leave credits as per Article 12.07. (e) Accrual of seniority when on such leave is calculated as follows: (i) For full-time Employees, seniority shall accrue as if they were working. (ii) For other than full-time Employees who have worked for one (1) year or more: 52 Week of Leave (iii) For other than full-time Employees who have worked for less than one (1) year: (f) Supplemental Employment Insurance Maternity/Paternity/Adoption Supplemental Employment Benefit (SEB) The Employer will implement a Supplemental Employment Benefits Plan. Employees will receive the Supplementary Employment Benefits if they meet eligibility requirements. Maternity/Paternity/Adoption Supplemental Employment Benefit (SEB) shall apply to all Employees.