What criteria does the NLRB consider when determining whether an appropriate unit of employees has substantial mutuality of interests?

What are the $$rules$$ employers and union organizers must follow during an organizational campaign? $($Itemize your answer a$-$e$)$

It is important to understand the composition of a union from the local level all the way to a federation. Explain the respective roles of the four levels of unions: local, national, intermediate, and federation. $($You should $4$ distinct paragraphs$).$

What steps are commonly used by unions to organize a workplace?

What is the $4$ letter notation for the federal agency that is focused on improving wages and working conditions for private sector employees regardless of whether they are or are not part of a union.?