<human>: Could you distill the essence of the text into 1-3 sentences?

Ok, wall of text incoming.

My dad has worked just above 12 weeks at all this whole year due to being sick and there being a lack of work in the Gulf. His company also docked his pay and demoted him December of last year because he sent them an email complaining about how they gave him (and the rest of the workers) a 2 day notice that the work they had after Christmas wasn't happening. He worked 3 weeks starting October 8th at his docked pay, which just wrapped up the 28th. They were going to pay him his original pay until December 10 starting 28 OCT, 6 weeks. Today, we get an email saying that he would only be working until the 19th of November, 3 weeks total at his full paying job. Everybody else has been given 6 weeks at full pay.
<bot>: My dad was promised 6 weeks actual pay, but was given 3. Everyone else has 6 full pay weeks. Is there anything we can do?