Not being in the industry, so someone educate me, but am surprised they’re running any services at all that week. They’re taking passengers for free so have all the wages, diesel, engineering, staff costs to pay for with no revenue coming in.
Also from a passenger point of view it’s probably worth saying most should still try to make alternative arrangements if at all possible, because such a skeleton service is going to be so busy as to likely have standing loads and refuse lots of passengers - frequencies of 10 or 15 mins becoming hourly doesn’t bode well for a guaranteed journey to/from work!
RE: Arriva North East: Planned Industrial Action