The new Labor Department rule could help millions more workers get access to benefits like overtime pay, unemployment insurance, Social Security benefits, employer-offered health insurance, the minimum wage, and paid sick days.

The proposed regulation would require employers to pay overtime to their salaried workers who are in executive, administrative, and professional roles, and make less than $1,059 a week, or $55,068 a year for full-time employees.

Although several of the Teamsters’ demands have been met, the union is still pushing to raise wages for part-time workers at UPS, who earn a minimum of only $16.20 per hour. "These part-timers are working at poverty wages," Teamsters President Sean O'Brien said.

Democratic lawmakers tried to pass a second bill that would have added paid sick days to the agreement, but were unable to reach the 60-vote threshold needed in the Senate, due to most Republican senators opposing the measure.