Nigel Edwards, chief executive of the Nuffield Trust think tank said that low levels of staff, disagreements with officials and bullying is creating a “toxic mix”.
Because of these factors NHS officials are concerned that the staff will eventually lose any affinity for the business.
These warnings come from a growing tension between the employees and the ministers.
Over the past year the NHS has seen a number of strikes by junior doctors and nurses protesting over plants to discard the bursaries they are given while studying. Nigel Edwards explains that this dissatisfaction comes at a time where there were inevitable shortages, with only 31% of respondents saying there was enough staff for them to do their jobs properly.
A manager said that there is a “creeping sense of inevitability and acceptance that failure will happen at some point".
Mr Edwards said the upkeep and sympathy of health workers was supported by a "psychological" contract and that last month it was revealed NHS trusts had overspent by a record £2.45bn in 2015-16.
He added that "Once the psychological contract with staff is broken, it may be impossible to reverse,"
Siva Anandaciva, of NHS Providers, said "This is a pivotal time for the NHS, with extreme financial and capacity challenges putting extra pressure on staff,"
"Perhaps inevitably, staff morale can take a battering."