Marlborough – First Church Marlborough (Congregational) will hold its annual Labor Day BBQ Picnic at the Union Common, Bolton and Main streets, Monday, Sept. 2, from 11:30 a.m. to 3 p.m.?The menu includes BBQ pork sandwiches, sausage sandwiches with peppers and onions, grilled chicken sandwiches, hot dogs and lemonade.?The event is open to the public during the annual Marlborough Labor Day Parade, with no advance tickets necessary.