Central Region Supplement Art 1 section 1 says "Seasonal and probationary employees will NOT receive any of the benefits of this Agreement other then wages spelled out in this Agreement."
No... it says they WILL work under the provisions...
ARTICLE 1-PROBATIONARY
EMPLOYEES-SEASONAL EMPLOYEES
Section 1
(a) Probationary employees: a new employee shall work under the
provisions of this Agreement but shall be employed only on a thirty
(30) working day trial basis, during which period he/she may be
discharged without further recourse; provided however, that the
Employer may not discharge or discipline for the purpose of evading
this Agreement or discriminating against union members. After
working thirty (30) days within a ninety (90) consecutive day period,
the employee shall be placed on the regular seniority list, and
his/her seniority date shall revert back to the first (1st) day of the
thirty (30) day period in which the employee gained seniority.