GENERAL DISCLOSURES LIST OF EMPLOYEE BENEFITS Appendix D 2021 Owens Corning Sustainability Report | Appendices | 327 Owens Corning offers a wide range of competitive benefit offerings, allowing our employees to choose what best fits their individual needs. Benefits are made available to regular, full-time employees and some part-time employees working at least 24 hours per week. These benefits vary by country, business unit, and work location. Not all benefits are available at all locations. These benefits include: „ Retirement savings plans „ Medical coverage „ Maternity and/or paternity leave „ Employee Assistance program „ Flexible work-schemes and work-sharing „ Bonus/Incentive pay „ Recall rights for laid-off employees „ Job security initiatives for redeployment, including retraining, relocation, work-sharing, and outplacement services „ Insurance • Healthcare employee • Healthcare family • Healthcare domestic partner • Dental • Vision • Short-term disability • Long-term disability „ Education benefits • Employee • Family „ Relocation assistance „ Work/Life support program „ Wellness/Fitness program „ On-site fitness facilities (available at some locations) „ Adoption assistance „ 401(k) financial education „ 401(k) match „ Paid and unpaid leaves of absences „ On-site recreation facilities (available at some locations) „ Bereavement leave „ Mentoring programs „ Employee recognition programs „ Matching gift program „ Workforce training, skills, and leadership development programs „ Wellness credits and access to Health Improvement programs „ Life insurance „ Business travel accident protection „ Employee stock purchase program „ Paid vacation and holidays „ Fertility, surrogacy, and adoption benefits to help employees build their families „ Tuition reimbursement (other than career training) „ Gym facilities (available at some locations) „ Preventive healthcare programs „ Paid maternity leave (for workers in certain countries) „ Retirement healthcare benefits (for employees hired prior to 1/1/2006)

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