A California Labor Law poster will be posted in some capacity in every licensed business in California. These posters must be posted to be visible to all employees, and are usually found in a lunch area, affixed to a wall.
You can find information on the Massachusetts labor law poster service online. One source is: http://www.hrdocs.com/Posters/state/Massachusetts.html
One might find a Kiss poster for sale on Amazon. One can also get a very good price for a Kiss poster by participating in an auction on eBay. One should look for sellers with high ratings.
Poster Printer Supply is a decent option to help you find what you are looking for. You can also check with your local staples or office max to meet your poster needs.
The needed posters can be ordered online. You will find them at www.laborlawcenter.com.
I think you can find information on labor law notices at the US Department of Labor. Try this specific page: http://www.dol.gov/osbp/sbrefa/poster/matrix.htm.
Here's the PDF poster from the Vermont Department of Labor: http://www.labor.vermont.gov/Portals/0/UI/WH-11%20Minimum%20Wage%20Rate.pdf
Just print this PDF poster from the Washington Department of Labor: http://www.lni.wa.gov/IPUB/700-102-909.pdf
There are many different employment-related posters in the state of Maryland. Visit this site to read more about them and find the poster you need: http://dllr.maryland.gov/oeope/poster.shtml.
Information on Labor laws in the State of California can be found in several places, to include: local public libraries and California state, county and city offices.
You can find information about labor law posters on the US Department of Labors website. This website provides an abundance of information for both employees as well as employers.
I would recommend OSHA.gov. They have a poster on their home page that you can download free of charge or print it as a pdf right off of the web site.
One can find labour law posters from many online stores. One can buy them from 'Labour Law Posters', 'Lazorlink', 'Compliance Poster' and from 'eBay'.