For everybody. Like any other physical law of nature.
[1] https://www.youtube.com/watch?v=LsUS3ynhAKY&feature=emb_logo
https://www.businessinsider.com/supply-and-demand-model-of-l...
The assumption of a labor shortage because of low nominal unemployment is incorrect - the gig economy is thin margin as it is even with poor pay. It utilizes the previously "idle" labor in a marginal business model but without sufficient demand in other sectors it only provides a low floor.