Will squeezed households really borrow more to prop up living standards?

Office for Budget Responsibility is challenged over the question of personal debt.

What are we to make of different views on the extent to which growing household debt will offset the squeeze in living standards in the coming years?

The independent Office for Budget Responsibility caused a bit of a stir at the time of the Budget when it suggested that household debt is set to rise over the rest of the parliament – from £1.6trn in 2011 to £2.1trn in 2015, or from 160 per cent of household disposable income to 175 per cent. Rising debt will sit alongside low savings, so the ratio of household saving to disposable income will fall to roughly 3.5 per cent – half its average over the past 50 years – for the duration of the OBR's forecast period.

The clash between these projections and the government's favoured narrative concerning the need for the country to rein in its debt-fuelled spending habits – public and private – attracted some attention and prompted an online debate about whether tighter fiscal policy is shifting the balance between public and private debt.

However, the underlying economic implications, and their impact on household living standards between now and the next election, remain largely unprobed. Last week the OBR published a little-noticed note that set out to clarify why it has changed its projections for household debt since last June. It makes for interesting reading – but doesn't really answer the most fundamental questions.

The most important argument that the OBR makes is that – regardless of high existing levels of debt – household indebtedness will continue to rise over the next four years as families battle to sustain their living standard, running down savings and ratcheting up more borrowing. And it is worth noting that the OBR explicitly says that its projection for household debt is premised on steadily easing credit conditions and a stronger housing market.

The savings ratio

The critical question is whether the OBR is right about how households will react: is a further rise in personal indebtedness, already at historically unprecedented levels, a realistic account of how households at the sharp end of the living standards squeeze will behave over the medium term in the post-crunch economy?

No one really knows. We can't. Never in modern times have we seen the combination of such a large fall in household incomes, the severity of the shock to the credit system, and plummeting consumer confidence. So it is very hard to know what the OBR bases its behavioural assumptions on when it claims that greater debt will prevent falling disposable incomes feeding through into reduced expenditures.

It's a view that seems to run counter to a range of recent expert opinions and forecasts. For example, the Council of Mortgage Lenders has referred to the OBR projection on the scale of the increase in household debt this year as "wildly optimistic" and at odds with its own forecasts, while PwC has projected household debt to be falling as a proportion of GDP throughout this parliament.

Roger Bootle of Deloitte has just marked down consumer spending growth in 2011 to -1 per cent, and takes issue with the notion that household savings will fall further in the medium term, saying that tight credit conditions and the current weakness of consumer sentiment will "surely mean that households will want to save more, rather than less". Likewise, the NIESR, in its most recent quarterly update, predicts that following a short-term reduction this year, the savings ratio will rise steadily until 2015.

Analysts in the US are similarly sceptical about the scope for medium-term falls in their savings ratio: Cardiff Garcia has argued in the Financial Times that, while such a position might boost the economy in the short term, "nobody would think it healthy" for the savings rate to return to the "absurd" levels of the mid-Noughties.

Room for manoeuvre?

So much for the forecasters and pundits; what does the public say? Despite a well-documented shift from borrowing to saving since the start of the credit crunch, UK households remain severely debt-stressed. Bank of England polling data shows that, at the end of 2010, half of all households said they were concerned by their level of debt.

Borrowing more remains off limits for many: one-third reported suffering some form of credit constraint. At the same time, one in three households reported savings of under £500 – leaving little scope for protecting living standards by dipping into these funds.

Our own analysis at the Resolution Foundation shows that those on low to middle incomes face sharper constraints than better-off households. As the chart below shows, while around one-third (31 per cent) of households in the top half of the income distribution said they were finding it harder to borrow to finance spending in 2010 than in 2009, this rose among those on low to middle incomes to over half (53 per cent), up from just 16 per cent in 2007.

And these are exactly the people who are going to feel the fall in living standards most acutely and who, presumably, the OBR expects to borrow more. Looking to the future, one-fifth of all households said they were saving more in anticipation of fiscal tightening. Just 3 per cent were planning on spending more.

Taken together, these findings provide powerful grounds for asking what would happen if the OBR used different assumptions about how households may run down, as well as build up, debt during the prolonged fall in living standards. Without this, existing projections appear to be a bit of a punt.

No doubt setting out different scenarios for debt in this way would expose some uncomfortable findings: growth is bound to be weaker if household expenditure tracks falling disposable income more tightly than the OBR currently expects. Projections for net exports and business investment can't just be pumped up to take up the slack. But that isn't a reason to avoid the issue.

Despite all the frothy rhetoric about "rebalancing of the economy", the growth of household consumption will be absolutely pivotal in the resumption of steady growth. Indeed, the key factor determining the strength of the UK recovery will be the uncertain reactions of millions of households, which are already close to the edge, to further falls in disposable income. The question of whether ever more personal debt can be used to fill the growing gap in living standards deserves far more serious scrutiny than it has received to date.

Gavin Kelly is chief executive and Matthew Whittaker senior economist, both at the Resolution Foundation.

This post originally appeared on the Resolution Foundation blog.

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Inside Big Ben: why the world’s most famous clock will soon lose its bong

Every now and then, even the most famous of clocks need a bit of care.

London is soon going to lose one of its most familiar sounds when the world-famous Big Ben falls silent for repairs. The “bonging” chimes that have marked the passing of time for Londoners since 1859 will fall silent for months beginning in 2017 as part of a three-year £29m conservation project.

Of course, “Big Ben” is the nickname of the Great Bell and the bell itself is not in bad shape – even though it does have a huge crack in it.

The bell weighs nearly 14 tonnes and it cracked in 1859 when it was first bonged with a hammer that was way too heavy.

The crack was never repaired. Instead the bell was rotated one eighth of a turn and a lighter (200kg) hammer was installed. The cracked bell has a characteristic sound which we have all grown to love.

Big Ben strikes. UK Parliament.

Instead, it is the Elizabeth Tower (1859) and the clock mechanism (1854), designed by Denison and Airy, that need attention.

Any building or machine needs regular maintenance – we paint our doors and windows when they need it and we repair or replace our cars quite routinely. It is convenient to choose a day when we’re out of the house to paint the doors, or when we don’t need the car to repair the brakes. But a clock just doesn’t stop – especially not a clock as iconic as the Great Clock at the Palace of Westminster.

Repairs to the tower are long overdue. There is corrosion damage to the cast iron roof and to the belfry structure which keeps the bells in place. There is water damage to the masonry and condensation problems will be addressed, too. There are plumbing and electrical works to be done for a lift to be installed in one of the ventilation shafts, toilet facilities and the fitting of low-energy lighting.

Marvel of engineering

The clock mechanism itself is remarkable. In its 162-year history it has only had one major breakdown. In 1976 the speed regulator for the chimes broke and the mechanism sped up to destruction. The resulting damage took months to repair.

The weights that drive the clock are, like the bells and hammers, unimaginably huge. The “drive train” that keeps the pendulum swinging and that turns the hands is driven by a weight of about 100kg. Two other weights that ring the bells are each over a tonne. If any of these weights falls out of control (as in the 1976 incident), they could do a lot of damage.

The pendulum suspension spring is especially critical because it holds up the huge pendulum bob which weighs 321kg. The swinging pendulum releases the “escapement” every two seconds which then turns the hands on the clock’s four faces. If you look very closely, you will see that the minute hand doesn’t move smoothly but it sits still most of the time, only moving on each tick by 1.5cm.

The pendulum swings back and forth 21,600 times a day. That’s nearly 8m times a year, bending the pendulum spring. Like any metal, it has the potential to suffer from fatigue. The pendulum needs to be lifted out of the clock so that the spring can be closely inspected.

The clock derives its remarkable accuracy in part from the temperature compensation which is built into the construction of the pendulum. This was yet another of John Harrison’s genius ideas (you probably know him from longitude fame). He came up with the solution of using metals of differing temperature expansion coefficient so that the pendulum doesn’t change in length as the temperature changes with the seasons.

In the Westminster clock, the pendulum shaft is made of concentric tubes of steel and zinc. A similar construction is described for the clock in Trinity College Cambridge and near perfect temperature compensation can be achieved. But zinc is a ductile metal and the tube deforms with time under the heavy load of the 321kg pendulum bob. This “creeping” will cause the temperature compensation to jam up and become less effective.

So stopping the clock will also be a good opportunity to dismantle the pendulum completely and to check that the zinc tube is sliding freely. This in itself is a few days' work.

What makes it tick

But the truly clever bit of this clock is the escapement. All clocks have one - it’s what makes the clock tick, quite literally. Denison developed his new gravity escapement especially for the Westminster clock. It decouples the driving force of the falling weight from the periodic force that maintains the motion of the pendulum. To this day, the best tower clocks in England use the gravity escapement leading to remarkable accuracy – better even than that of your quartz crystal wrist watch.

In Denison’s gravity escapement, the “tick” is the impact of the “legs” of the escapement colliding with hardened steel seats. Each collision causes microscopic damage which, accumulated over millions of collisions per year, causes wear and tear affecting the accuracy of the clock. It is impossible to inspect the escapement without stopping the clock. Part of the maintenance proposed during this stoppage is a thorough overhaul of the escapement and the other workings of the clock.

The Westminster clock is a remarkable icon for London and for England. For more than 150 years it has reminded us of each hour, tirelessly. That’s what I love about clocks – they seem to carry on without a fuss. But every now and then even the most famous of clocks need a bit of care. After this period of pampering, “Big Ben” ought to be set for another 100 or so years of trouble-free running.

The Conversation

Hugh Hunt is a Reader in Engineering Dynamics and Vibration at the University of Cambridge.

This article was originally published on The Conversation. Read the original article.