About 160 top managers at Parkland Memorial Hospital will get a chance to split up to $2.8 million in incentive pay next year. The board of managers endorsed the 2011 executive incentive plan Tuesday, the same day it approved the public hospital's $1.2 billion budget. The incentive plan will not affect the hospital's spending plan that promises Dallas County property owners a slight tax cut next year. "The incentive plan must be self-funded," vowed John Haupert, Parkland's chief operating officer. To get the additional pay, the administrators must find a way to boost the hospital's bottom line by at least $20.6 million next year. That means finding additional revenue or cutting costs.