Ask HN: How long has it taken for job markets to recover after stock markets do?

In previous tech boom/bust cycles how long has it taken between the two? Seems we must be getting close to the job market catching up.

Next thing that needs to happen I imagine is a major IPO of a tech startup, which will start the process of VC investing that leads to froth, which will generate demand for employees. Just not sure how long all that takes to trickle.