In a certification application, the Board held a hearing to determine whether a Labour Relations Officer should inquire into the duties of persons classified as drillers and rock truck drivers.
The applicant union argued that drillers are labourers and rock truck drivers are teamsters, and thus neither fall within the operating engineers' jurisdiction.
The respondent employer argued that both classifications are included in its local collective agreement with the applicant.
The Board ruled that drillers are construction labourers and directed the Officer not to inquire into their duties.
However, the Board found the employer's apprehension regarding rock truck drivers valid and directed the Officer to report on their duties, noting the employer's undertaking to proceed via an agreed statement of fact.