Hi @kalpan,
I would just add a few things to what GreenHak explained. You are confusing your way around mainly because you are switching principal applicant in your entire process several times.
Like already explained, your spouse needs to have a skilled job + PGWP - for you to be eligible for dependent SOWP. Obviously this doesn't apply if you are getting a closed work permit on your own.
The 4 year (or 2 year maximum) does not apply to SOWP. It will be issued as long as the principal applicant's study or work permit is valid for. The maximum also doesn't apply if you have a skilled job in either NOC 0 or A. I have had multiple closed LMIA based work permits exceeding 6 year period combined, because I am NOC A.
So answer to your last few questions
1) You cannot apply together for extension, if you expect to get SOWP based upon your wife's PGWP. She needs to have a PGWP + skilled job offer. However, if she already has a skilled job offer, you both could submit applications together (her PGWP + your SOWP) attaching HER skilled job offer.
2) What does it has to do with YOUR working proof? You are trying to use her PGWP to get you a dependent SOWP - right? It is the principal applicant whose skilled job matters. In this case you are saying it would be your spouse. So you work or not, is irrelevant.
3) If you are eligible otherwise (she has a skilled job), you would get SOWP for the same length as her PGWP. This is not dependent upon any prior work / study permit time frames.
Amid all of that, do know that CIC recently announced cutting max duration for one LMIA based work permit to ONE year. It is being advocated against strongly by Canadian employers, but it cant be said what are the consequences. Note that this is not maximum period in this case i.e. one can keep applying for new permits each year and get those renewed (NOC 0 or A exempted from 4 year max). But this would mean CIC won't issue a single work permit with validity longer than a year for a closed work permit.
I would just add a few things to what GreenHak explained. You are confusing your way around mainly because you are switching principal applicant in your entire process several times.
Like already explained, your spouse needs to have a skilled job + PGWP - for you to be eligible for dependent SOWP. Obviously this doesn't apply if you are getting a closed work permit on your own.
The 4 year (or 2 year maximum) does not apply to SOWP. It will be issued as long as the principal applicant's study or work permit is valid for. The maximum also doesn't apply if you have a skilled job in either NOC 0 or A. I have had multiple closed LMIA based work permits exceeding 6 year period combined, because I am NOC A.
So answer to your last few questions
1) You cannot apply together for extension, if you expect to get SOWP based upon your wife's PGWP. She needs to have a PGWP + skilled job offer. However, if she already has a skilled job offer, you both could submit applications together (her PGWP + your SOWP) attaching HER skilled job offer.
2) What does it has to do with YOUR working proof? You are trying to use her PGWP to get you a dependent SOWP - right? It is the principal applicant whose skilled job matters. In this case you are saying it would be your spouse. So you work or not, is irrelevant.
3) If you are eligible otherwise (she has a skilled job), you would get SOWP for the same length as her PGWP. This is not dependent upon any prior work / study permit time frames.
Amid all of that, do know that CIC recently announced cutting max duration for one LMIA based work permit to ONE year. It is being advocated against strongly by Canadian employers, but it cant be said what are the consequences. Note that this is not maximum period in this case i.e. one can keep applying for new permits each year and get those renewed (NOC 0 or A exempted from 4 year max). But this would mean CIC won't issue a single work permit with validity longer than a year for a closed work permit.