The California Supreme Court will decide whether large retailers in the state are required to have defibrillators on hand to help treat customers and workers who suffer sudden cardiac arrest.

The high court said it will issue an opinion Monday morning. The devices deliver a jolt of electricity to a stalled heart and help victims recover.

For two decades, an increasing number of public places in the U.S. have been required to have automated external defibrillators on hand, including government buildings, airports and many other public places. A Los Angeles-area family who lost a relative to sudden cardiac arrest while shopping in Target filed a lawsuit to require large retailers to join the list.

During oral arguments in May, a majority of the seven-judge court appeared cool to the idea.