From NJ.com:

The state Senate’s Law and Public Safety Committee today voted 3-2 along party lines to approve the legislation (A2006), which lowers the allowed size from 15 rounds to 10. The bill has been kicking around the Legislature since 2012 as one of several dozen pushed in the aftermath of the Sandy Hook school shooting in Newtown, Ct. But while it has already passed the Assembly twice, this is the first time it has advanced in the state Senate.

[ . . . ]

Some gun rights supporters said they would not turn over their 15-round magazines. The bill would give them 180 days to do so.

So the bill doesn’t even ‘grandfather’ already possessed magazines. Let’s say a N.J. resident already has a pistol that has 12-round magazines. There are no 10-round magazines available for it. He’s screwed. He can’t use the gun if he turns in his magazines.

Back in the day, I knew people who lived in Pennsylvania (because real estate was dirt cheap) and would commute to jobs in N.J. and even NY City. Maybe that’s the answer to those stuck working in those states.