Wariness and a generally circumspect attitude to what is revealed predominate in the relationships between workers and bosses in workplaces like that. At least, that's in my limited personal experience of working in factories, big post offices, that sort of place...it's more to do with capitalism than class I think.
Lumber mills are not like factories or big post offices. These things are in the woods, in remote locations, or at least in very small towns close to the trees. They are generally the biggest employer in the area by far. Everyone in town knows what goes on in the mill. They are all neighbours.
