An initial violation would result in a written warning. Subsequent violations could result in fines of up to $250.
The full Board of Commissioners is expected to consider the ordinance — which would apply throughout unincorporated DeKalb — on Tuesday.
Several DeKalb County cities have also considered or already enacted their own masking ordinances.
Brookhaven Mayor John Ernst signed an executive order putting one in place on Thursday. Decatur's city commission approved an ordinance Friday morning. Doraville is expected to consider its own mandate on Monday.
Such mandates conflict with a statewide order from Gov. Brian Kemp that "strongly encourages" — but does not require — the use of masks, and bans local governments from enacting stricter measures to fight COVID-19.
But in recent days local governments have begun adopting their own measures anyway. The cities of Savannah, East Point and Atlanta were among the first to do so.
Kemp has called local mandates "unenforceable" but has not threatened legal action.
“We have to do something to protect the health and life of our citizens in DeKalb," Davis Johnson said this week. "So sometimes you have to make bold moves. ... And if it's challenged, we have to step up to the plate.”