Baystate Franklin Medical Center in Greenfield, Mass., locked out its 230 nurses for two days after the nurses announced plans for a one-day strike. The hospital brought in 60 temporary nurses to care for patients during the lockout. The nurses, represented by the Massachusetts Nurses Association, have been negotiating a new contract with the hospital since November and the parties’ last contract expired in December 2016. The main issues stalling agreement concern staffing levels, health insurance coverage, and the amount of overtime nurses are required to put in each month.