Negotiations broke down earlier this month and unionized workers have been holding rallies and practice pickets across the country. The Teamsters, which represent more than half of the company’s workforce, will resume talks with UPS on Tuesday.

That leaves less than a week to come to an agreement before the current contract expires at the end of the day on Monday, July 31. The union has authorized a strike and Sean M. O’Brien, a fiery leader elected last year to lead the union, has vowed to do so if their demands aren’t met.

https://www.pbs.org/newshour/economy/ups-workers-may-soon-strike-heres-what-you-need-to-know