SEOUL: Nearly 200 managers at Samsung Electronics Co. Ltd’s mobile division have voluntarily returned a quarter of their first-half bonuses, a source with direct knowledge of the matter said, with the firm poised to post its worst quarterly profit in two years.

Samsung Electronics earlier this month announced operating profit guidance for April-June that was far below most analysts’ forecasts.

The world’s biggest smartphone maker is facing slowing market growth and intensifying competition.

The decision to return some of the bonus was partly a gesture to demonstrate that managers are taking responsibility for the earnings decline, and partly a way to show that management will work harder, the source said.