In a report released by the Washington Post it appears that Apple stores across U.S. are taking steps towards unionization. The report claims that workers from at two stores are close to filing with the NLRB and at least six other locations are looking to unionize. The Post claims this unionization push is due to hourly worker wage stagnation that is below the rate of inflation.
See "Apple store workers looking to unionize", Sean Keane, CNET, February 18, 2022