contract

I work with an orchestra. We have been declared employees. Those of us that are not salaried are contracted on an individual basis according to what work the orchestra has to offer us. An "offer" sheet is sent to us with various work offers. Our contract states that we must agree to at least 60% in order to stay in good standing. Our Master Agreement contains a release clause that states that each of the parties, employer and employee, each have the right to decline work with 29 days notice. The employer does not pay for work that is contracted if it releases us before the 29 days. We can be released for any reason or circumstance. The Master Agreement also states that the employer must offer us the same amount of work, number or services, each year or they must pay us the difference. Recently, a new member was added to our department, meaning that four people instead of three would be used to do the same work. Surprisingly, all of us were offered more work than last year. On this year's contract, a performance that would normally take two people to complete had three assigned. Soon after the contracts were signed, I was dropped from this production losing the work and the pay. Also, seven un-named (ghost) services without times or places, were added to this contract. (108 services with times, dates and places were offered, yet a total of 115 services were offered on the contract) Without these services, my total work load would be well below the work offered the year before. Also, services have been dropped as the season has progressed. Is this contract fraud or does the 29 day clause protect the employer and allow them to remove work from the contract within the 29 days without responsibility to the employees. Thank you!