Labor would take about 5-6 months in average. Mine was approved in 5 months. Once labor is approved, you can tell your employer to do premium processing for I-140. This is the only step where you can do premium processing which would take about 2-3 weeks. After I-140 is approved and if EB3 is current, you can file I-485 right away otherwise you have to wait for your priority date. Once filed, it will take about 7-8 months to get approved. Sometimes it can be sooner then that as well. You can apply for EAD at the same time you send your I-485 application to USCIS.This information is all based on my personal experience. Processing time may vary based on individual cases. Good luck.