[go] the extra mile

to try harder than what is expected

She always goes the extra mile to make her clients feel valued.
The teacher went the extra mile by staying late to help struggling students.
They went the extra mile to ensure the party was a success.
The customer service team goes the extra mile to address every complaint promptly.
If you want to impress your boss, you’ll need to go the extra mile on this project.

to make a special effort to achieve something or ensure that a task is completed exceptionally well

In his role as a team leader, Tom consistently goes the extra mile to support his colleagues, fostering a positive work environment.