301-70.301—What governing policies must we establish for payment of miscellaneous expenses?
You should limit payment of miscellaneous expenses to only those expenses that are necessary and in the interest of the Government.
You must establish policies and procedures governing:
(b)
When you will pay for communications services, including whether you will pay for a telephone call to the employee's home or place where the employee's dependent children are;
(c)
Who will determine if other miscellaneous expenses are appropriate for reimbursement in connection with official travel.