Changes to Contribution Rates. During the term of this Agreement, any required increase in the contribution rate, from that indicated for the above noted plans, upon notification to the Board and upon such effective date, shall be deducted in a like amount as a payroll deduction defined above, and remitted as an employer deduction, for those employees for whom contributions are required. All notifications of contribution rate changes must be made in writing. Changes in contribution rates will come into effect the month following ratification.