Olympus is planning to relocate Southborough and Littleton workers in Westborough, and two others are planning new facilities in Hopkinton and Marlborough.
Medical device company Candela, life sciences manufacturer Lykan Bioscience and medical optics firm Olympus Corporation of the Americas have been approved for new tax breaks.
California biologics company LakePharma has launched a viral vector facility in its Gateway Park operations on Worcester Polytechnic Institute's campus.
LakePharma company was going to bring 150 jobs to Worcester, but a Chinese competitor took its place after the company decided it couldn't wait any longer and moved to Hopkinton.