What an Ontario workman gets who dies from cancer that is work-related
The Occupational Disease and Survivor Benefit Program offered under the WSIB offers a lump sum payment for workers who died from a work-related disease.
For surviving spouses over 60 the minimum amount is $20,000.
One of the diseases listed is occupational is cancer.

Monthly payments are 60 per cent of deceased person’s net income for anyone at age 60 or over.

Philosophy of federal government on paying survivor benefits on CPP
The view of the federal government on payment of death benefits can be summarized in the following quote. In a report titled “Phase III Evaluation of Survivor Benefits and Other Features of Canada Pension Plan, the authors state: “A benefit payable on the death of a contributor (of Canada Pension Plan) was considered desirable for reasons of fairness and practicality.”

Compensation to Australian Veterans

Australian veterans are able to claim compensation and treatment for any cancer or illness related to their service. All Korea veterans over the age of 70 in 2003 were eligible for the gold card which entitled them to free, comprehensive health care, including prescription drugs. Source -- Press Release from Danna Vale, former minister of Australian Veterans Affairs, December, 2003.

Veterans Independent Program for spouses
Any spouse who was providing care for a veteran who has now passed away is eligible for those benefits, notably housekeeping assistance and yard work. At one time, the benefits were discontinued but those spouses who have had their benefits discontinued can re-apply.  
-- John Walker, Acting Regional Director Veterans Affairs Canada, Atlantic Region, Hansard, Nova Scotia House of Assembly, Jan. 20, 2005.

You get benefit of doubt

“Where there is no credible evidence to the contrary, the benefit of the doubt can be applied to award a disability pension for certain cancer types shown to have a significantly greater incidence in Korea Veterans in Australia.”  -- Minister of Veterans Affairs, Albina Guarnieri, Korea Veterans Association National Convention, Toronto, Sept. 11, 2004.

Sources of Cancer in Korea Veterans

Australia study findings

  1. Incidence of cancer 23 per cent higher than the general population. Out of 15,041 veterans contacted in 1982, there were 3,543 cancers identified in the veteran population between 1982 and 1999.
  2. The cause is not attributed to smoking.
  3. Army veterans had much higher rate than other services but duration of time in Korea seems to make no difference.
  4. Damp conditions in bunkers and generally harsh conditions; extreme exposure to DDT and insecticides are also among the main causes.

Some Canadian veterans’ observations on possible causes

  1. Spraying bunkers for fleas on rats. Bunkers occupied by soldiers immediately after.
  2. Heavy rat population at front
  3. Drinking water treated; local water made soldiers sick.
  4. Crawling through rice paddies planted with human manure
  5. Daily consumption of malaria pills
  6. Generally harsh conditions of living outside, especially in winter with a cold wind blowing down and across the hills from Manchuria.

Bladder cancer in South Korean males
Urological cancer along with renal and prostate cancer are the most prevalent cancers in South Korea. The peak incidence of cancer is in the 70-year-old males and older, an age that corresponds to service time in the military during the Korean War. Incidence in males over females was 5.4:1. The survey began in 1985 and ended in 1999.

Proximity of Canadian troops to Hiroshima
Among Japanese who were along the fringes of the bomb blast or were far enough from the hypocenter not to have shown symptoms, cancers began showing up 50 years after the blast. They infected all organs. The cancers with which these people were infected were no different than in the normal population. What is frightening is that experiments in laboratory animals showed that mutations have occurred in their offspring.
Health Physics Society, posted on Internet July 2, 1983

Those soldiers who went through the replacement centre in Hiro, Japan or trained at the Battle School in Hara Mura, or were patients in the British Commonwealth Hospital in Kure will remember how close they were to Hiroshima where the atom bomb exploded. On many a sunny afternoon, the boat Brooke Claxton, named after the defense minister, plied the waters to see the devastation left by the bomb. We estimate the distance was about 25 miles and within the radiation area.

Radiation effects
The American Scientist online in the January-February 2006 issue says that cancer investigators who specialize in radiation effects have seen an increase in cancer rates while the World Health Organization says mankind has found no cure for nuclear explosion.
In the 1986, Cherynobyl nuclear disaster nine million people over 155,000 kilometres were effected. The fallout has a half life of 29 years.