Architects and Engineers are sometimes pleasantly surprised to find out that they, also, can terminate those crazy, hard to deal with Owners—at least, if the Owners fail to make payments as required.

You can also terminate for Owner delays to the work, or where you think the contractor should be fired but the Owner disagrees. Again, the standard 7 days written notice is required. (See B101 §9.4).

Do you have to walk off the job if they are not paying you? No—you could exercise the smaller remedy of suspending services (with 7 days written notice) until payments are caught up or the contract performance is corrected by the Owner. (See B101 §9.1). Suspension rather than outright termination is a softer approach when working with an owner you do not want to burn (too many) bridges with.