Kroger union members working at 38 stores in West Virginia, Kentucky and Ohio will vote on a new contract and potential work stoppage. The union has recommended its members vote to strike. The voting will take place Wednesday and Thursday. The results of the vote on the contract and the vote on a potential strike will be released Friday. if the proposed contract is rejected and a strike authorization vote passes, the committee will be empowered to call a strike at a time of its choosing, a union official said.