37. A senior administrator who agrees with an employer to be assigned to a position of union member or unionizable non-member shall receive the salary corresponding to the classification determined by the employer in accordance with the salary provisions applicable to that position.If the salary received by the senior administrator before the assignment is higher that the salary determined in accordance with the first paragraph, that salary shall be maintained provided that it is within the salary range for that position and does not exceed the maximum for that position, in which case it shall be reduced to that maximum.
If the salary of a senior administrator is reduced following such an assignment:
— the senior administrator shall receive as a lump sum the total difference between the salary he received prior to the assignment and the new annual salary he is entitled to, for the first 3 years following the appointment;
— the senior administrator shall receive in the same manner two thirds of the difference between the salary he received prior to the assignment and the new annual salary he is entitled to for the fourth year, during that fourth year;
— the senior administrator shall receive in the same manner one third of the difference between the salary he received prior to the assignment and the new annual salary he is entitled to for the fifth year, during that fifth year.