There are a number of interesting points here. UNG is correct there is no criminal offence in not paying the JIB rate for the qualification. It is not acceptable, however under the JIB rules. The Company can of course, in the last resort, refuse to abide by the rules and leave the JIB, but no criminal law will have been breached. Secondly the time requirement of the Approved grade has gone. An Electrician simply has to take the relevant C&G course (2391) and once completed is entitled to the grade under JIB rules.If I have understood you correctly they took on the Approved spark 2 years ago, that in contracting terms is a long time, as things change in this industry in weeks,if not days. You say there is a big contract with a Housing Association, when was it awarded? how long does it run, when does it come up for renewal. One possibility is that the company's workload has decreased since they took this Approved guy on, there may be less certainty. That would be one possible explanation for your company's actions. Not an excuse..just an explanation. It is your shout, but as others have advised it seems to me you have two options; go to the company and explain that you are entitled, under the JIB, rules but ask if there is a particular problem ( an understanding approach should get a fair hear hearing i.e. you are being understanding but you are entitled to an answer). Otherwise it is the confrontational approach, go to the Union and insist on your rights under the JIB. However that is a risk strategy and if it were me I would try to find out from the company the reasons why, whilst letting them know politely that you understand your rights under the JIB. But be in no doubt, in law you have no recourse, you may however be able to bring a constructive dismissal case under an industrial tribunal in the event that you leave or are let go over this issue, but they cannot force the company to pay you the rate nor can they force them to reinstate you in the event that lose your job..so think carefully before taking action. My personal advice to you would be to start asking questions.