"obligation to avoid" is correct and usable in written English.
For example, "The government has an obligation to avoid causing any further economic hardship to its citizens."
The I.M.F. has a constitutional obligation to avoid making loans in which wishful thinking informs the repayment schedule.
Justices have an obligation to avoid off-the-bench behavior hurtful to the court's mission and reputation.
Does a company have any obligation to avoid transactions it knows are intended to deceive creditors and investors?
We as a society have an obligation to avoid and mitigate that harm to the extent possible.
Do professors (and people in general) have an obligation to avoid creating situations in which it is both tempting and easy for others to behave unethically?
He started with a speech in which he said he believed his department was under a particular obligation to avoid waste.
"We call on the company to meet its legal and moral obligations to avoid compulsory redundancies and to enter into talks with NUJ reps," they said.
That bit of advice is lavished on her younger sister Christine, whose marriage to Paul (Jamey Sheridan), a workaholic businessman, is strained to the breaking point when he pleads business obligations to avoid participating in a father-daughter ballet recital.
Liberty's policy officer, Sara Ogilvie, said Downing Street's decision not to press ahead with its original proposal to confiscate the passports of foreign fighters might look like some "fancy footwork" in order to comply with the letter of Britain's international obligations to avoid making people stateless, but in practice it would breach them.
Under the bill, the Treasury Secretary would have to certify that the fund's board had passed resolutions requiring borrowers to fulfill their international trade obligations, to avoid discriminating between domestic and foreign creditors and to end preferential lending and subsidies to favored enterprises.
The DfT is currently consulting on whether strict obligations to avoid overcrowding, for example, by adding more carriages, should be imposed more widely on train operators.
