Translation of "tentative agreement" into French

It also begs the question, if we have a tentative agreement, how does the union respond to that?

Et s'il y a accord de principe, comment le syndicat réagit-il?

My colleague the President of the Treasury Board announced last night the conclusion of a tentative agreement for striking blue-collar workers

Hier soir, mon collégue, le président du Conseil du Trésor, a annoncé la conclusion d'un accord préliminaire pour les cols bleus en gréve