The phrase "a host of obligations" is correct and usable in written English.
It can be used to describe a large number of responsibilities or duties that someone has.
Example: "After taking on the new project, I found myself facing a host of obligations that I had to manage carefully."
Alternatives: "a multitude of responsibilities" or "a variety of duties."
Southern Christians believed that the Bible imposed on masters a host of obligations to their slaves.
This imposes a host of obligations on companies that want to do business with government.
One, it is a lot easier to ditch planes and leases on gates at airports when an airline is in bankruptcy and can essentially renege on a host of obligations.
Common sense morality, after all, seems to endorse a host of obligations derived from persons's roles or positions, even when these roles or positions are not occupied as the result of any voluntary choice on the part of the moral agent.
Two more workers bring with them a host of new obligations under current law.
The prevailing view was that risk was inherent in the asset, not the manner in which it was financed.At the same time financial firms built up a host of liquidity obligations, not all of which they fully understood.
By contrast, some F.C.C. officials and telephone industry executives say that if the commission buckles to the other agencies and forces the industry to take on a host of expensive obligations the development of promising new communications services may be stalled or squelched for years to come.
The United States also faces a host of problems — global security obligations, towering debt, a tattered education system and economic growth — all of which have the potential to sap its resources and power.
It raised a host of unsettling questions about the obligations of biological fathers and the rights of their children.
There are a host of other rules, requirements and obligations that stations once followed as a "pubic trustee".
Traditional Judaism is grounded in the notion that men are obligated in all of the mitzvot (religious obligations) except those relating to women's biology, while women are exempt from fulfilling many obligations for a host of reasons -- mostly connected with the expectation that they are busy with domestic chores and childrearing so the men can focus on more lofty obligations.
