Crossing a picket line and patronizing a business whose workers are on strike, against the will of the workers, is a controversial action with some people saying it should never be done. I read an article about a Conservative rabbi in New England who made a halakhic ruling that purchasing food for Passover from a particular grocery store whose employees are currently on strike is forbidden. Despite the fact that his ruling used some arguments that I consider logically dubious (e.g. equating a wage-worker with a non-Jewish slave), I think the question itself is interesting.

Do any halakhic sources, ancient or recent, discuss the permissiblity of crossing a picket line?

  • Interesting question +1
    – kouty
    Apr 16, 2019 at 15:06
  • As far as I remember all our sources speak of Rabbis' guidance and small places. In megacities, we live now, and without this guidance, we're not supposed to take either side. Especially if all of them Goyim.
    – Al Berko
    Apr 16, 2019 at 17:52
  • @AlBerko To the contrary: In small cities, there may be only one butcher’s shop in the whole town, and still you might find a source to reject going there; all the more so in a big city where you can easily go somewhere else. If they say that you can go to a butcher’s shop in a small city, it would depend on the reason: if it’s because there’s nowhere else to go, then in a big city where you can go somewhere else it would be forbidden; if they say for some reason independent on the number of shops in the area, it would be permissible. In any event you’d be able to extrapolate to large cities.
    – DonielF
    Apr 16, 2019 at 21:36
  • @DonielF I'm discussing unions. It appears to me (from the beginning of B"B) that all those need Rabbinical guidance. otherwise, how do we know how's right? If the strike leads to doubling the prices should we take the workers' side?
    – Al Berko
    Apr 16, 2019 at 21:52
  • @Al I'm not familiar with the sugya; can you direct me to the sources you're talking about?
    – DonielF
    Apr 16, 2019 at 21:53

1 Answer 1


To the best of my knowledge, "crossing a picket line" means for an employee who had committed to a union and benefited from it to then violate that commitment and go work when his "brethren" are on strike. (Or if the musicians go on strike and the actors have agreed to support them, same idea.)

You're asking a different question -- I've never made a commitment in my life to Bob's Supermarket; should I not shop there because many of Bob's employees are standing outside and protesting that Bob is unfair to his employees? Can we check whether that's called "crossing a picket line", please?

Anyhow -- as an employee, Rabbi Moshe Feinstein wrote in 1951 that it is proper and a mitzvah to abide by one's agreement to the union. (Not quite "obligatory", but "a very good thing.") The Gemara Bava Metzia 49a talks about the strong moral obligation if you said "I will buy/sell" without signing anything; this is slightly less as the picket-line agreement is not a tangible item that is bought or sold.

Igros Moshe Choshen Mishpat v1, #58

text of the above citation

Concerning the matter of a workers' agudah, known as a union ... that they must assist one another in strikes and the like, to advance their causes; I see not the slightest prohibition [in joining one] ... they are absolutely allowed to agree on matters -- even those not in the framework of acquisitions -- and it is a mitzvah to follow them.

Depending on which opinion we follow in Bava Metzia 49a, this is either because just like your weights and measures should be exact, so should your word; or because we say it's meritorious to even follow what you thought to give someone; certainly what you actually told them you'd do.

As a consumer, there have been cases effectively of "consumer picketing", but that's to protect the consumers. I'm not aware of "don't shop at Bob's because he doesn't treat his people well." (There have been cases where a Jewish shopkeeper asks the rabbis to intervene with the free market to protect his business vs. the non-Jewish one, and the rabbis often shy away from this.) The Gemara Pesachim tells about a town where people's custom was to throw out all their chametz clay pots before Pesach; the new rabbi told the pot sellers that if their prices stayed fair he would leave this alone, but if they raised their prices around Pesach time, he would publicly rule that there is no need to throw out your pots and buy new ones.

Similarly there was a case in the 1700s of fishmongers who wanted to dramatically raise the price of fish on Fridays, knowing the Jews would want to buy fish for Shabbos; it was ... the First Lubavitcher Rebbe, if I'm not mistaken ... who was prepared to ban everyone from buying fish (at any price) until the price came down.

There were also communal enactments in the Middle Ages that wedding extravaganzas not be bigger than a certain size, even if you personally could afford it; i.e. a top-down agreement on limiting consumption.

I suppose a community's leadership could get together and declare a ban on shopping at Joe's to protect Joe's workers ... but I've never heard of anything quite like that.

  • 1
    But how is it linked to a prohibition to buy in a store when a part of workers are on strike?
    – kouty
    Apr 16, 2019 at 16:38
  • @kouty thanks! Good point, I've fleshed this out better now.
    – Shalom
    Apr 16, 2019 at 16:54
  • When I've heard the phrase "crossing a picket line", it's almost always been in reference to customers, not to workers. Apr 16, 2019 at 19:27
  • 1
    This answer provides a lot of very nice information, but doesn't answer the question.
    – Daniel
    Apr 16, 2019 at 20:54
  • @Daniel The question was "has this been addressed before in responsa?" My answer is "no; here are the three most similar things that have been."
    – Shalom
    Apr 16, 2019 at 22:07

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