A good law would be something like this: If you work at Walmart for $N, you get extra $X from government. If you work anywhere else for $N or less, you also get extra $X from government. If you stop working at all, you still get $X from government. -- Written this way, it is less of a support for Walmart, because you can take it anywhere else.
A bad law would be like this: you must keep working in Walmart in order to get extra $X from government. This can be done indirectly, for example if Walmart must pay a fixed fee or do some insane paperwork, which is nothing for them given their number of employees, but would ruin a smaller employer.
What are the exact rules?
A good law would be something like this: If you work at Walmart for $N, you get extra $X from government. If you work anywhere else for $N or less, you also get extra $X from government. If you stop working at all, you still get $X from government. -- Written this way, it is less of a support for Walmart, because you can take it anywhere else.
A bad law would be like this: you must keep working in Walmart in order to get extra $X from government. This can be done indirectly, for example if Walmart must pay a fixed fee or do some insane paperwork, which is nothing for them given their number of employees, but would ruin a smaller employer.