Lower blood alcohol limits could be as much a problem for employers as for those who are driving.

The driving limit will almost halve on Monday, while there's also a move for employers to be responsible if drink drivers who crash, have come from a work function.

While that's not expected to be in place until next year, Workbase CEO Katherine Percy says employers need to adapt now, starting with work Christmas parties.

"If you really are anticipating that your employees will want to let their hair down then you do need to make prior arrangements about how they're going to get home and provide transport options."

The move comes amidst plans to hold employers accountable if drunk drivers who are involved in crashes have come from staff functions.

Ms Percy says while that won't come into place until next year, now is the best time to prepare.

"There is a lot employers can do in terms of advising employees about the new law of educating people about safe drinking, providing lots of non-alcoholic drinks."

But at least one NRL club says there's no direct link between promotion and consumption.

Warriors managing director Jim Doyle told Mike Hosking he doesn't see a direct connection.

"I don't think people watch that on TV and think 'I need to now go and buy some more alcohol'," he says

"I don't think they come to a game and think 'because that team has got alcohol sponsorship on the jersey, I better now go and buy that product."

Doyle says the proposal has raised serious questions about the logistics of a ban.