4.2 In addition, Monsanto shall reimburse the Service Provider for all reasonable out-of-pocket expenses incurred in performing the Services in accordance with Monsanto’s World-wide Business Expense Policy, provided that such expenses are pre-approved in writing by Monsanto. The Service Provider must submit an itemized invoice of expenses to be reimbursed. Unless expressly stated otherwise in Schedule 2, reimbursement shall be for actual expenses incurred, without any mark-up.