Boston’s Faulkner Hospital is planning a large expansion in Jamaica Plain.

Five days after a train derailed while approaching JFK-UMass station on the Red Line, the MBTA on Sunday said it has resumed seamless service to Quincy and Braintree stops but asked customers to build an extra 20 minutes into their planned travel times as they begin another work week.

Major biotech firm Ironwood Pharmaceuticals plans to relocate its headquarters to a new office in downtown Boston from its current location in Cambridge’s Kendall Square.

Gov. Charlie Baker made quick work of the bill imposing a three-month delay to the start of a payroll tax to fund paid family and medical leave benefits for all Massachusetts workers, signing it within 90 minutes of its final legislative vote.