Nobody, You are one very confused individual.
Joyce gave the government 3 hrs notice of the grounding at 2 pm ,Saturday. He spoke with Albanese, Evans and Gillard's chief of staff. At 5pm he gave all who listened to his press conference approx 51 hrs notice of the proposed lockout. He said on the public record that the grounding was as the result of a safety assessment. Further, he said that the lockout was to bring the dispute to a head (didn't it how?) Fwa convened a hearing for 10 pm and at approx 2am Sunday adjourned any decision until after a hearing on Sunday afternoon. As a result of that hearing PIA was terminated in accordance with the law in the national interest (not because of red ties but because of the grounding).
Any notice that Joyce gave anyone of grounding and or lockout was purely a matter of his choosing.... not any legislated requirement.