Several new employment laws are now in effect in California for 2020. Specifically, AB 1768 expands the definition of “public works” to include work performed “during the design, site assessment, feasibility study, and other preconstruction phases of construction,” regardless of whether any further construction work is conducted.
See here for more information: https://www.jdsupra.com/legalnews/california-legislature-adopts-several-74242/