In Superior Court in downtown Los Angeles, a judge is expected to rule on whether the teachers union, United Teachers Los Angeles, gave 10 days’ notice, in proper legal form, to the L.A. Unified School District that its members would no longer work under its existing contract. Such notice is, under state contract law, one required step on the way to a strike. In this case, the contract actually expired more than a year ago, though union members were still working under it.
Source: latimes.com – Los Angeles Times