In mid-2020, the spread of COVID-19 led to government-imposed lockdowns as well as lower consumer demand for dining in restaurants in many countries. During this time, the number of waitstaff employed in restaurants fell sharply, but there was little change in wages. As some places ended lockdowns and demand for restaurant dining increased sharply, employment in restaurants increased slowly, but wages began rising. What shifts in supply (S) and demand (D) for labour are consistent with these changes?