One of the advantages for employees in a group health plan is the contribution most employers make toward the cost of the health coverage premium â in many cases, employers pay one-half or more of the monthly premium for an employee.
The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in 1983, includes the five digits of the ZIP code, a hyphen, and four additional digits that determine a more specific location within a given ZIP code. The USPS provides a free online lookup tool for ZIP codes.
ZIP Class â The ZIP Classification Code describes the type of ZIP area a 5-digit ZIP Code serves. A 'P' indicates the. ZIP Code has PO Boxes only and a blank ZIP Class indicates both PO Box and street delivery. PBSA NO Secondary â The MTC street address is in a Postal facility that is a standalone address. (i.e. not in a high-. rise or sharing the primary number with other businesses).