Nissan Motor said Thursday it would eliminate 9,000 jobs and reduce its global production capacity by 20 percent, deep cuts that come as it grapples with weakening sales in all of its core markets.

The Japanese auto maker’s chief executive, Makoto Uchida, will take a 50 percent reduction in his monthly compensation, the company added.

The moves follow a sharp decline in Nissan’s operating profit, which fell 90 percent to $214 million in the first half of the current fiscal year. Retail sales declined in all of the company’s core North America, Japan and China markets during the period.