Maryland Gov. Martin O’Malley signed four bills into law May 2 that provide protections to workers serving jury duty, tighten regulations on gun ownership, protect asbestos workers and make impersonating a transit police officer illegal.

Under Maryland law (SB640), ex-offenders who committed a violent crime in or have a drug-related felony from another state now may not own or possess firearms in Maryland.

Senate Bill 16 protects workers from being forced to work a night shift on the same day that they performed jury duty, while SB 649 increased fines from $5,000 to $25,000 for asbestos removal firms which remove the substance improperly, endangering the lives of their workers. The bill requires neutral third parties to oversee asbestos removal certification testing and provides a fund to support asbestos worker enforcement actions.

Also, Washington Metropolitan Area Transit Authority police are now among law enforcement officers who cannot be impersonated. The bill was introduced after the Prince George’s County State’s Attorney’s office was unable to prosecute a transit officer impersonator because doing so was not illegal at the time.