Air and transportation agencies will hold public workshops in Oakland on Monday and San Ramon on Tuesday on a proposed rule to benefit Bay Area commuters who use public transit, carpools, van pools or bicycles to get to work.

The first workshop will be held from 2 to 4 p.m. Monday at the Bort MetroCenter auditorium, 101 Eighth St., Oakland.

Another workshop will be held from 1 to 3 p.m. Tuesday at the San Ramon Community Center, Alcosta Room, 12501 Alcosta Blvd.

The Bay Area Air Quality Management District and Metropolitan Transportation Commission propose a rule that would require large companies to offer workers incentives to commute using buses, trains, carpools or bikes.

Bay Area employers with 50 or more full-time workers could chose among four options to offer commuter benefits. They include employers allowing workers to pay for transit or carpool expenses with pretax dollars, offering transit and carpool subsidies, offering free van or bus service, or coming up with another option equally effective as the others in reducing vehicle use.

Contact Denis Cuff at 925-943-8267. Follow him at Twitter.com/deniscuff.