The recent union success with the school employee strike in Los Angeles has demonstrated the utility of short-term strikes which have become popular across the US. Rather than walking out during the contract negotiations with the school district, the student services staff members part of Service Employees International Union Local 99 went on strike for a set time frame regardless of the changes occurring at the bargaining table. This is because the strike was not a protest of the contract negotiations; it was a protest of the school district's labor practices. More strikes like this one have been occurring across the country and the number of short-term strikes fewer than five days have increased, as unions aim to share their grievances with the public to put pressure on their employers. For the LA school workers, this labor tactic was effective in multiple ways as it drew attention to its members and their low pay with the intention of establishing respect for their work, and it indirectly helped win pay increases in the contract negotiations.
See "Short-term strikes on the rise in the US, as unions seek to put pressure on management by airing out grievances to gain public support", Chris Isidore, CNN, March 28, 2023