Earnings is a complicated legal issue. See http://www.wcwebzine.com/a-z/averageearnings.htm and http://www.wcwebzine.com/a-z/earningcapacity.htm. If you worked sporadically out of a union hall for various employers, it is not as cut and dried as you would like. Read those two pages and some of the cases and you will see what I mean.
You may want to contact your employer and ask them what type of employment they have you categorized as.
If you think the adjuster is paying you incorrectly you should send them a letter advising them of why you think it is the wrong rate, what you think your rate should be, demand the amount you think is wed to you and request self-imposed penalties.
If they do not correct the issue file a DOR and have a judge decide what is the correct rate.
YOU should also consider hiring an attorney as these are complicated issues.
This communication does not constitute "legal advice", nor does it form an attorney-client relationship.
Complex. Find out from your employer your classification, and have a local lawyer investigate. Avvo has a terrific "find a lawyer" tool to find a top-rated Avvo attorney. Good luck.
Claims Adjusters will typically calculate average weekly wages by getting a wage statement showing earnings for the 52 weeks prior to the date of injury and averaging them out. I suspect that is what the claims adjuster in your case is doing in your case and because you were on unemployment, the average weekly wages is low.
Please Google search and read Labor Code section 4453. In your case it sounds like there is a dispute about your true earning capacity and perhaps whether or not you were a seasonal worker. Your next question is probably how is this dispute resolved?
An Expedited Hearing will probably need to be filed and a Judge will have to decide what your true earning capacity was on the date of injury. You may be able to have the Information and Assistance officer at the WCAB help you file for the Expedited Hearing but your best bet is to retain a reputable WC attorney who is willing to litigate the earnings dispute on your behalf. You can find reputable WC attorneys at the following website: https://www.caaa.org/index.cfm?pg=FindaLawyerDirectory
Good luck to you!
When you were hired by this employer, what were you told about how long the job would last? How many hours did you work per week on this job? Why were you unemployed for seven months before starting this job? Has it been typical of your work history that you would be off work for long stretches of time between positions, or was this an unusual situation? I can probably give you a better answer to your question if you can provide this information.