60.3. The pensionable salary of an officer who is released without pay for union activities is the salary paid to the officer by a body designated in Schedule II.1 to the Act respecting the Government and Public Employees Retirement Plan (chapter R-10). The body concerned must withhold the contributions from the pensionable salary it pays to such an officer and pay its employer’s contributory amount only on the part of the pensionable salary that exceeds the pensionable salary the employer would have paid if the officer had not been released without pay. The employer referred to in section 31 of the Act respecting the Government and Public Employees Retirement Plan must pay the contributory amount that would have been paid if the officer had not been released without pay.