Huh? What do you mean by "conservatives...happily utilize corporate taxation"? The GOP is notorious for corporate tax breaks, especially for corporations and the rich. They are about tax breaks regardless of the consequences.
We've talked about wage depression via temp workers before, albeit indirectly, here on the forums. The reason temp workers are attractive is because benefits laws don't scale the cost of those workers proportionally to full-time workers. A temp worker might cost a company (wage x 1.15), but a full-time worker might cost a company (wage x 1.25). So there are two factors: one is that the wage for temp workers is lower1 and the other is that the cost multiplier is lower. At the very least, policies could be in place to make the multiplier the same. This won't address the other issues that make people willing to accept low pay for a low-commitment job.
1This is odd in the first place; consultants, for example, get higher per-hour payments partly because the work is unsteady, and the hiring company is willing to pay a premium to avoid a long-term contract. Also look at other spot markets: Take electricity as an example. If you've got to buy power on the spot market, it's generally much more expensive than long-term contract prices.
So if employers are in need of more workers than they have now, you would think temp workers should cost more. So what makes temp jobs less? I place this proximally on the job takers: If companies need temp workers, they should be paying a premium. But what happens is these jobs are not spot needs by the employer - they are demonstrably "I need some cash, any I can get" jobs of desperation for the employees.
So the only way to fix this is to help people not be desperate for cash. This is why I said it's proximally a job-taker problem. Because there is no way, just by looking at wages, to distinguish between say a student just looking for a few extra dollars and someone who is trying to scrape by and not get kicked out of their housing. Pressure to just afford an apartment, or buy food, etc. is a complex issue; that is, the companies "not paying a fair wage" aren't the sole problem, it's also the real estate companies, it's the food conglomerates, it's cities not having good public transportation or messed up zoning laws, it's physical and mental health care cost burdens, etc. So merely trying to address the wage side is never going to work; this needs a coordinated change across many aspects of the economy simultaneously.
In my short life I've never seen an attempt at a coordinated change - only attempts at one aspect of a problem, which inevitably doesn't work, because it's just pushing the problem to another area.