Doing business after going over the registration and legalization process will be a little more easier than the national Haitian. You will get the respect of locals for being a foreigner.
Corporate tax is about 40% of profits and sole proprietorship are only 10-15%.
For recruiting you can use the service of job509.com a network that connects job seekers to employers.
You may also qualify for a 15 year tax holiday depending on the industry you will be working in.
You can also visit these links that will provide you a lot more information than what i know personally
Haitian chamber of commerce: ccih.org.ht or cfihaiti.net
this link will answer directly your questions: cfihaiti.net/j10/index.php/e g-business
Hope it helps.
PS: keep in mind written rules are not always respected in Haiti