Original sentence: For example, if a group of the workers strike so that the work of the rest of the workers becomes impossible or less productive, the employer may declare a lockout until the workers end the strike.Other times, particularly in the United States, a lockout occurs when union membership rejects the company's last and final offer at negotiations and offers to return to work under the same conditions of employment as existed under the now expired contract
Edited sentence: For example, if the anticipated strike severely hampers work of non-striking workers, the employer may declare a lockout until the workers end the strike.Other times, particularly in the United States, a lockout occurs when union membership rejects the company's last and final offer at negotiations and offers to return to work under the same conditions of employment as existed under the now-expired contract