Well my very preliminary search turned up three news articles all of which are bemoaning the fact that it's hard to get the illegals to keep skipping days of work, because they don't want to get fired and they need the money.
Some of these articles are AP, who I ALWAYS find to be totally manipulative, still, the tone all three strike is that they're not real excited about the prospects of this so called boycott (happening on International Communists day, by the way.)
But here are three articles to look over. It might not be necessary to find out which places are allegedly "closing", of course I'm aware these articles might be written to reduce expectations, but I don't see a lot of benefit in that vis-a-vis a successful boycott. But I'll keep looking:
Article #1
Article #2
Article #3