Unum Group (UNM)

Note 12 - Stock-Based
Compensation - Continued

as of the grant date. Stock options have a maximum term of ten years after the date of grant and generally vest after three years. At December 31,
2007, 31,486,483 shares were available for future grants.

Under the broad-based stock plan of 2002, up to 2,390,000 shares of common stock were available
for stock option awards to our employees, officers, consultants, and brokers, excluding certain senior officers and directors. The plan was terminated in February 2004 for purposes of any further grants. The stock options have a maximum term of ten
years after the date of grant and generally vest after three years.

Under the broad-based stock plan of 2001, up to 2,000,000 shares of common stock were
available for stock option awards to our employees, officers, consultants, and brokers, excluding certain senior officers and directors. The plan was terminated in December 2007 for purposes of any further grants, other than reload grants, for which
20,000 shares were available at December 31, 2007. The stock options have a maximum term of ten years after the date of grant and generally vest after three years.

FACE="Times New Roman" SIZE="2">Under the stock plan of 1999, comprised of the Provident Companies, Inc. stock plan of 1999 and the UnumProvident Corporation stock plan of 1999, an aggregate of up to 17,500,000 shares of common stock were available
for awards to our employees, officers, brokers, and directors. Awards could be in the form of stock options, stock appreciation rights, stock awards, dividend equivalent awards, or any other right or interest relating to stock. The plan was
terminated in May 2007 for purposes of any further grants, other than reload grants, for which 250,000 shares were available at December 31, 2007. Stock options have a maximum term of ten years after the date of grant and generally vest after
three years.

Substantially all of our employees are eligible to participate in an employee stock purchase plan (ESPP). Under the plan, up to 3,460,000
shares of common stock are authorized for issuance, of which 1,611,500 remain available for issuance at December 31, 2007. Stock may be purchased at the end of each financial quarter at a purchase price of 85 percent of the lower of its
beginning or end of quarter market prices.

We issue new shares of common stock for nonvested stock grants, exercise of stock options, and purchase of ESPP
shares.