Members of the county board of social services may receive a per diem in such amount as shall be established by the county board of commissioners. Reimbursement for subsistence and travel shall be in accordance with a policy set by the county board of commissioners. (1917, c. 170, s. 1; 1919, c. 46, s. 4; C.S., s. 5015; 1937, c. 319, s. 4; 1941, c. 270, s. 3; 1947, c. 92; 1959, c. 320; 1961, c. 186; 1969, c. 546, s. 1; 1971, c. 124; 1981, c. 275, s. 1; 1985, c. 418, s. 3.)