Final answer:
Starbucks is using the motivational technique known as Long-term incentives.
Step-by-step explanation:
Starbucks is using the motivational technique known as Long-term incentives. By providing benefits for employees who have been with the company for a pre-determined length of time, Starbucks is incentivizing long-term commitment and loyalty. This can help motivate employees to stay with the company and contribute to its success.