Solvency Funding Relief Regulations, 2009

24 If the face amount of letters of credit obtained or maintained in accordance with this Part for a plan year is less than the amount required by subsection 21(3) for that plan year, the employer shall make up the difference either by increasing the amount of letters of credit or by making additional payments to the pension fund no later than on the day on which the next quarterly payment is made to the pension fund in accordance with subsection 9(14) of the Pension Benefits Standards Regulations, 1985.