Strategically addressing increasing morale

You have a company that was hit hard by a recession. It had to lay off 25% of its 1,000 employees. And those that were left had to take a 15% pay reduction and also take on additional responsibilities of those who were laid off. Over the next 3 years, the economy got better, pay rates were restored, and hiring began again so that the workload was reduced to previous levels. However, the company realized that morale had been more permanently negatively affected than it had first realized.

Discuss the following (support your arguments with related sources AND examples):
Question: How can the company best work with HR to strategically address increasing morale?

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