I don't think this will ultimately be a big deal: "Sticky Wages" were a known problem on the gold standard, but it didn't cause major issues. People generally just didn't expect to get nominal raises.

If there were economic issues arising from sticky wages on a Bitcoin standard, companies could move to revenue or profit sharing with a smaller defined wage. That way employers wouldn't have to reduce wages, it would just be that the employee's fixed share of the profits would be shrinking.