W. Va. Code § 52-2-13

A grand juror shall be paid mileage, at the rate set by the commissioner of finance and administration for state employees, for travel expenses incurred in traveling from the grand juror's residence to the place of the holding of the grand jury and return, and shall be reimbursed for other expenses incurred as a result of required attendance at sessions of the grand jury at a rate of between $15 and $40, set at the discretion of the circuit court or the chief judge thereof, for each day of required attendance.