A person who requests to be banned from a gaming venue such as a casino is known as an "excluded person", and many Queenslanders who are fighting gambling problems choose to do this as a step on the road to recovery.

Until recently the distribution of gambling-related promotional material to excluded persons was only considered a breach of the industry's voluntary Code of Practice.

With the introduction of new laws, gaming operators can now face up to $4000 in penalties for distributing advertising or promotional material to a known excluded person.

Minister for gaming regulation, Peter Lawlor said the legislative changes would greatly help problem gamblers trying to kick the habit.

"People who recognize they have a problem can choose to exclude themselves from gaming venues and this legislation will ensure they're not enticed back by receiving advertising from gaming operators," Mr Lawlor said.

The legislation was enacted after a series of incidents in which excluded persons were sent promotional material. Gaming operators have failed to remove people from mailing lists even after being warned of previous failures by the Office of Liquor and Gaming Regulation.

In one case, an excluded person sent promotional material returned to gambling and was allowed into a gaming premise on multiple occasions.

"Gambling can be a serious concern for some people, and I applaud anybody who has the courage to recognize their problem and take this step," Mr Lawlor said.

"Choosing to be excluded from a gaming venue is a great first step and the Queensland Government is helping these people by ensuring less direct exposure to the very problem they're trying to leave behind."

The new laws have been introduced via amendments to the Gaming Machine Act 1991, the Wagering Act 1998, the Keno Act 1996 and the Casino Control Act 1982.