N.J. Stat. Ann. § 17:35-10

The directors or trustees, or the persons designated in the bylaws of any corporation subject to the provisions of this article shall fix the fee rates and amounts of premiums, assessments or periodical calls, the time and manner of their payment, and the risks to be assumed by the corporation and their duration, and may change the same as the experience of the corporation requires. An affidavit made by the person having charge of the mailing of notices of premiums, assessments or periodical calls, that the notice was mailed, stating the date of mailing, shall be prima facie evidence thereof.