PITTSBURGH — The Service Employees International Union is targeting McDonald’s restaurants and the University of Pittsburgh Medical Center with marches demanding a $15 minimum wage and union representation.

The union contends UPMC shuttle bus workers have also gone on strike seeking representation.

UPMC, which is Western Pennsylvania’s dominant hospital network, had previously announced plans to increase the minimum starting wage for entry-level jobs at most facilities to $15 per hour by 2021.

But the union contends UPMC needs to move faster. UPMC hasn’t immediately commented.

Organizers began their “Day of Disruption” marches at a McDonald’s in Pittsburgh’s East Liberty neighborhood this morning. The group plans similar protest near a McDonald’s and the federal building downtown during the evening rush hour.