If at all possible, it should be reduced to writing. In this effort the time for billing and payment should be discussed. Where matters are to extend over a long period of time, the parties should plan on how bills are to be rendered and paid. A lawyer should realize that prospective clients may have had little experience in dealing with lawyers' fees. E.C. 2-19, supra .
Full explanation is necessary.
And, if a substantial delay in payment is likely, then a fair rate of interest must be agreed upon. It should not exceed the legal rate. Respect for the client and confidence in the lawyer compel exercise of the highest possible degree of ethical conduct. The lawyer's conscience is his guide. And, every effort should be made to work out an amicable resolution of any differences that may arise.