After several discussions, the union and the company reached a bargaining that both sides could accept.

bargaining 是动词 bargain 的现在分词形式。bargain 的意思是"讨价还价、谈判"，指双方通过协商达成协议的过程。 bargaining 在这里指"谈判达成的协议"，强调通过协商和让步最终达成一致的结果。