The Fourth Cir­cuit Court of Appeals, in an unpub­lished opin­ion, addressed whether an employ­er’s pen­sion con­tri­bu­tion rules may con­sti­tute age dis­crim­i­na­tion under the Age Dis­crim­i­na­tion in Employ­ment Act of 1967, in Equal Employ­ment Oppor­tu­ni­ty Com­mis­sion v. Bal­ti­more Coun­ty, 385 Fed. Appx. 322 (4th Cir. 2010). The unan­i­mous opin­ion was writ­ten by Judge Den­nis Shed, and was joined by Judge Roger Gre­go­ry and Arther L. Alar­con (Senior Judge on Ninth Cir­cuit, sit­ting by designation).