Minerva has nailed it.
If you think about the role of social work, and the way it is intrinsically linked, whether we like it or not, to politics, this draws considerable attention to the role that socio-economics has on the ability of social workers to operate.
As a result, relationship-based practice is something that is continuously ongoing, and that requires an investment of time and resources to establish. As we're living in a period of austerity, the distribution of resources is thinner than before, due to the impact of increased demand and budget constraints. This is true irrespective of which area of social work (Children and Families, Adults, Learning and/or Physical Disabilities, Mental Health etc) you focus on. As you focus on a particular area, you'll be able to contextualise these challenges more effectively. For example, a social worker in Adult Social Services will be dealing with the budget constraints referenced above, and a specialised example of this would be the Supreme Court case of P v Cheshire West and Chester Council. This case basically overhauls the criteria for what would be classed as a 'deprivation of liberty'. In the simplest terms, anybody who is not free to leave their accommodation without any discouragement or distraction could potentially be deprived of their liberty, and this would need an order in place to legally legitimise this. The consequence, however, is that pretty much anybody in a residential, nursing or supported living home are at risk of falling into this. Previously, it took a much higher standard for a DoLs assessment to be initiated, so there's a gigantic national backlog at the moment, with local authorities assessing everybody in their service, to determine if they need to undergo a DoLs assessment.
That's just one example. There's many more, which are specific to respective social work specialisations.
Social Work operates under an unusual paradoxical dilemma. It is least needed at a time when the economy can devote appropriate resources to manage service users. It is most needed when those resources aren't there, due to austerity etc.