['I recently asked a coworker of mine to cover a shift for another employee.', 'Where they able to cover for the other employee?', 'Yes, they were happy to take the hours.']
That's good, I know what it's like when you can't get a shift covered and your just understaffed and scrambling the whole day.
I asked a coworker to cover a shift for another coworker. I was confident this person would take on more hours and step up when needed.