Is my employer entitled under employment law to impose a terms of settlement agreement on me to sign in order to pay me my back pay where I was under paid for 4years, to release them from any past, present and future claims? Do I have to sign it in order to get paid? I also do not agree with some of the clauses as there are still two unresolved issues from this period of time that they have not given me justified reasons as to why they are not paying me for those.