Because you have to quit to get a pay rise

Every year your boss gives you a 3% pay rise.

She tells you that it’s in line with your performance.

She tells you that it’s in line with market rates.

You look around for other jobs.

You find one and negotiate a salary 30% higher than what you’re getting now.

You tell your boss that you’re quitting to take the new job.

Immediately your boss offers you a 33% pay rise if you’ll stay.

She tells you that it’s in line with your performance.

She tells you that it’s in line with market rates.