PAN Card now-a-days even almost all household maids have! I was told this by my munshi that even my maid from Chatisgarh has one for each member of her family J That makes me wonder why they are now demanding before Women and Child Development Ministry equity (i.e. at par wages) equating themselves to a housewife i.e. 20% more salary from employer which will set them to be at par with employer's wife. Bingo !! That sums up Chindu's Budget 2013 proposal in lighter vein to all those non accountants here in family law forum J
Well, coming back to your query as in out of box reply, if you invest on below two you will know about her job if any other than tuning into Chidu Part II post divorce;
1. A good telephoto SLR camera with check box on time/date stamp on digital print.
2. Money for hiring local taxi in her living city to follow her 8 hrs. a day door-to-door for a week.
With above two do it yourself findings i.e. if she leaves home for work or she is in a regular job or she is enggaged into tutions or keeping herself busy with some tailoring work or joined some distant uncle's family business (she will say without pay) and for all these discoveries you need to take week long leave from your work for a change to see how good your wife is doing after making your life miserable and any evidence thus cometh are acceptable in Court of Law under S. 125 CrPC for further proceedings U/s 91 CrPC or S. 340 CrPC in interest of justice.