Thursday marks the last chance for investors to receive the next dividend payout from EMCOR Group (NYSE:EME). What’s HappeningThe company announced on Thursday that it would pay shareholders a quarterly dividend of 18 cents per share. On Friday, EMCOR Group will go ex-dividend, meaning the stock will trade lower to reflect that payout. In other words, the stock will likely open 18 cents lower than it would have opened on any other day. In order to be eligible to receive a company’s dividend, shareholders must own the stock prior to the ex-dividend date—in this case, Friday. Shareholders who ow…