The Supreme Court ruling which requires management to bargain over the decision to unilaterally replace bargaining unit members with subcontractors to do essentially the same work under similar conditions is the Fibreboard Ruling .
Option C
Step-by-step explanation:
Fibreboard Ruling is a type of ruling performed by the Supreme Court and according to this ruling, the management has to bargain the working units and replace their positions with the working units present at the sub-levels to perform the same type of work under the same type of working conditions. All this is done by the management to compensate for any kind of loss being faced due to hiring superior working units to perform a specific job in the department.