Easy solution if you have the courage. Pick up a needle gun, use it for 1 hour straight & fill out an accident report for vibration, noise or some other type of muscle fatigue. Get another guy to go paint or clean for an hour straight & fill out accident report for headache due to chemical smell. Have someone cut up vegetables & clean in galley for hour straight then fill out accident report for wrist pain. When QHSE does investigation tell them about captains orders of no breaks unless its a certain time. Captain will be retrained or replaced. Most supervisors would prefer to be punched in the balls than have QHSE & client on them for creating unsafe work environment.
As for me, I start out almost every job telling my guys, don’t kill yourself, if you need a break, take it, if you have an important telephone call take/make it, get the job done though. Thats the way I liked to be treated when I was lower on totem pole.