The pension paid may be adjusted if the medical condition resulting from the duty injury either improves or worsens substantially.

The nation's trade deficit worsened substantially in June as imports soared to a record and exports declined.

Lorimar's financial condition worsened substantially in the intervening months, leading to a renegotiation of the deal's price in October.

The increases in oil prices substantially worsened the country's already precarious terms of trade.

But he cautioned that the United States budget position "will substantially worsen in the coming years unless major deficit-reducing actions are taken."

The Natural Resources Defense Council, a Washington-based conservation lobby, predicts that unless current trends are reversed, the quality of city air will worsen substantially in the 1990's.

Sanitary conditions worsened substantially, resulting in an increase of infectious mosquito plagues.

Although the economy was already in a mild recession at this point, conditions worsened substantially after the devaluation of the Mexican peso during December 1994.

"It is unclear whether the sale to American will be able to be completed, and if the sale is not completed, our financial condition, which is already precarious, will worsen substantially."