Operation status display device and operation status display method

An operation status display device configured to display an operation status of a board work machine configured to perform predetermined board work on a board, in which an operator replenishes an article to be used in production of a board product using the board work machine to produce the board product, the operation status display device comprising:

• an acquisition section configured to acquire a first time, which is a wait time from when the article is insufficient in the board work machine to when the operator starts replenishment work of the article, and a second time, which is a work time from when the operator starts the replenishment work to when the article is replenished in the board work machine;
• and
• a display section configured to display the first time and the second time in a graph in a distinguishable manner, for a stop time of the board work machine from when the article is insufficient in the board work machine to when the article is replenished.