joining me now is reporter melanie trottman of the "wall street journal."o what's at the core of this case here? >> how much control does a company have over the workers in question? so mcdonald's, for example. do they control the wages and working conditions at an independently owned store in iowa? it used to be that you had to have direct control to be considered a joint employer. that meant you would co-determine things like wages and working conditions. well now the board says even indirect control, you reserve the right to have control over the workers. >> sreenivasan: what are the ripple effects here? does that mean mcdonald's corp is responsible for the wages or whether or not these employees can unionize? >> well, what it means is a mcdonald's corp or a company that subsubcontracts workers could be drawn into collective bargaining talks with workers at a restaurant or workers at a temporary staffing company who want to unionize. and the rationale is unions say, look, these companies affect the wages and working conditions of these workers, and so th