I can see this on both sides. I think it's been posted that similar laws have been tried without negative repercussion; and under most normal circumstances I can see that being the case. However, it is also true that we are in middle of a long going recession, with high unemployment, and these harsh times will particularly hurt the smaller businesses who aren't as insulated as corporations. Though I think (IIRC) it was something like 1/2 a day/month; which means 6 days of paid sick leave a year; and that doesn't seem terribly large. There are other concerns as well, such as allowing the paid sick days would encourage workers who are sick to stay at home; thus not spreading their cold to the rest of the workers and possibly affecting the productivity of many more.
It's a fairly entangled state, and it's hard to say how it will come out in the wash. Still, it's been made law? If so, we'll soon have data on it.
But, no statewide mandates.
As a small business operator, I believe this is counterproductive, especially in the current economic climate.