A year ago I agreed a fulltime contract which was convenient for us both. As the project grew the workload became higher and the customer had financial problems leading to decreasing of working hours that had fixed hour rate even to partial pauses for several weeks. This is a financial problem, most contracts in this area are fulltime, new clients demand fulltime envolvment. I've discussed this problem with the customer and proposed to review and change the current contract, to my current worload and work time. This was ignored. I'm not willing to break the contract, how can I force to change the contract to overcome the financial problem?
Update: This is a general question because we are a small team of freelancers suffering from same problem. For workload I mean, that we are doing stuff that was not discussed when we agreed to work together and this costs higher.
For example, we agreed 10$/hr for 40hrs/week. So a fulltime contract. After the project has grown more work is needed to be done, which requires for the contract to be reviewed. We are doing this work with the same hour rate, because we had good working relationship. Things have changed, the customer offers only 15-20hours to work, so I obtain 50% of payments. He doesnt want to review the contract as he will "soon" find investors and I'll get the same 40hrs. But that does not happen. New customers demand 40hrs/week envolvment. So to work on new people I need to termnate the current contract or live on receiving half or less of agreed payments. On the other hand, the new customer agrees to pay more $/hr as this is the new average hour rate for this work.
Update2: The pay rate was agreed when we had 40 hr/week to make agreed work. Currently the amount of work is the same as for 40hrs but the client demands in 15hrs. This an ongoin project that grows in functionality very quickly.