When in receipt of Log of Claims firstly:

Cost all items fully and list the impact on the company margins per annum.

Secondly:

Implement a Communications Plan with your employees to ensure there is a full understanding of the potential impacts on the business. Also ensure all discussions with employees and their representatives are documented and confirm issues raised by all in writing.

Thirdly:

There are tools available under the Fair Work Act to ensure Good Faith Bargaining and prevention of Industrial Disputation.

Finally:
Value the relationship with your employees as most people understand Capacity to Pay and how it can affect Profitability, damage to the Brand and on-going employment.