Let’s use these words – Conditions, Terms, Hostility, Organization.

Conditions – these are the wages, benefits, conditions in the workplace.

Terms – these are the rules of engagement of the conflict in the workplace, so to speak, the acceptable class struggle tactics/practices as fixed by custom, law, personalities, and organization.

Hostility – this is how generalized the conflict is.

Organization – this is the level of discipline, dedication, and ability of the people in the workplace.

For simplicity’s sake, let’s say each can be high or low. Some examples and descriptions.
Conditions low = typical McDonald’s
Conditions high = unionized construction trades

Terms low = lectures and bullying, and things that are legal
Terms high = firings and other things near the upper limit of legality and things which are illegal

Hostility low = not a general conflict, discipline from the bosses and worker resistance may occur individually (absenteeism, working slowly etc)
Hostility high = organized anti-union campaign, marches on the boss, etc

Organization low = people don’t know each other
Organization high = good communication, solid relationships

A unionized shop will generally have better conditions and lower terms on the boss’s side. This results from previous organization. Unionized doesn’t always mean organized, though. Building a union means building organization, but once built the two can be separate. Workplace organizing aims to build organization, which involves upping the level of hostility. It may mean upping the terms on the workers’ side and will involve trying to limit or render ineffective the terms on the bosses’ side.