In the Department of Natural Resources, the Employer shall pay one hundred dollars ($100) per month to Wildlife Investigators, Wildlife Education Officers, Wildlife Officers 1 and 2, Watercraft Officers, Watercraft Investigators, Watercraft Specialists, and Watercraft Education Officers who are required by their Employer to maintain an office in their homes on a permanent basis. Effective with the pay period that includes July 1, 2007, this payment shall be increased to one-hundred and twenty-five dollars ($125.00) per month. This payment will compensate these employees for the use of their homes as office space, i.e., public listed phone (unless Employer provides voice mail system with established message retrieval procedures), equipment and supply storage, files etc. In the Department of Commerce, Liquor Compliance Officers, who are required by the Employer to maintain an office in their homes on a permanent basis, shall receive fifty-five dollars ($55) per month to compensate for the use of their homes as office space. Effective with the pay period that includes July 1, 2007, this payment shall be seventy dollars ($70.00) per month.