More Recession proff businesses

Here are a couple of businesses that will never decline in demand, one of which is soo easy to start, you can have your phone buzzing by the end of the week.
Start a Green cleaning company, relatively cheap to start (with less than $500) you can buy yourself a commercial vacuum (with a hepa filter) , check out the green cleaning institute website, greencleaninginstitute.com. advertising your business is easier than ever with websites like craigslist to start and with a good reputation your business will grow just by word of mouth.
Green cleaning is growing and mostly tends to cater to higher end clientele, you may start by pricing yourself competitively then charge more as your business grows. Remember when you start hiring employees to treat them well to ensure low turn over rate.
Start a tax/book keeping service, people will always need this service no matter what the economic situation is. Even to this day medical billing is still growing as doctors outsource their bookkeeping. The number of people who used a tax preparer in 2007 was 84 million. This is a business you can start part time and enjoy full time wages.