Definition: Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].
Input: The pay increase  Walmartâs third minimum wage increase since 2015  and bonus will benefit more than 1 million U.S. hourly workers  it said. Separately on Thursday   Walmartâs Samâs Club unit  said on Twitter that  it  was shutting a series of stores following a review. It did not say how many.
 Sam 's Club reported the store closures in a tweet after a series of reports from local news outlets said some  Sam 's Club stores were closed abruptly on Thursday  with employees learning of the move as they arrived for work. (bit.ly/2DjkkWv)
The increase in wages will cost approximately $300 million on top of wage hike plans that had been included in next fiscal yearâs plans   the company  said.
Labor groups have said that past rises in wages at the retailer have led to a cut in work hours for employees as  the company  sought to offset the impact on profits. Walmart has denied that.

Lower taxes and tight labor market prompt Walmart to hike U.S. wages