Southwest Airlines says it's not filling some jobs and summer internships this year as the company looks to lower costs.

Southwest Airlines is hitting pause on corporate hiring, promotions and summer internships to cut costs after months of pressure from an activist investor. The Dallas-based airline is also halting its “Southwest Rallies,

Southwest said that it will continue to evaluate its hiring needs on an ongoing basis to determine when it makes the most sense to restart hiring.

Southwest Airlines is implementing cost-cutting measures by pausing some hirings, internships and employee events to lower costs.

The DOT filed a lawsuit against Southwest Airlines, citing a pattern of chronic delays, as the government pushes for stricter accountability.

Southwest Airlines has stopped hiring corporate workers and is nixing its signature employee rallies as leaders try to cut costs. Amid a vicious fight with an activist investor for control of the company,