If you answered no, then you will want to start. For years it has been acceptable practice to send employee notices through snail mail, this has been recognized as the “mailbox rule”, this rule makes the assumption that regular postal mail will reach the addressee. However, a new ruling in an FMLA case is calling this practice into question after an employee was fired after not returning from leave after her 12 weeks of FMLA were exhausted and the employee stated that she never received the FMLA notices, read more here. HR Knowledge has long taken the stance that it is in employer’s best interest to send FMLA notices and important time-sensitive benefit related notices by certified mail or other method with a tracking ability.