Jump detection with wavelets for high-frequency financial time series

This paper introduces a new nonparametric test to identify jump arrival times in high frequency financial time series data. The asymptotic distribution of the test is derived. We demonstrate that the test is robust for different specifications of price processes and the presence of the microstructure noise. A Monte Carlo simulation is conducted which shows that the test has good size and power. Further, we examine the multi-scale jump dynamics in US equity markets. The main findings are as follows. First, the jump dynamics of equities are sensitive to data sampling frequency with significant underestimation of jump intensities at lower frequencies. Second, although arrival densities of positive jumps and negative jumps are symmetric across different time scales, the magnitude of jumps is distributed asymmetrically at high frequencies. Third, only 20% of jumps occur in the trading session from 9:30 AM to 4:00 PM, suggesting that illiquidity during after-hours trading is a strong determinant of jumps.     

Pitting real options theory against risk diversification theory: International diversification and joint ownership control in economic crisis

This study examines how MNE divestment decisions differ according to real options vs. risk diversification perspectives. We develop competing hypotheses in relation to international diversification and joint ownership control. Empirical results give consistent support to the real options perspective. We find that large MNEs with greater international diversification are less likely to divest their subsidiaries during times of economic crisis. The negative effect of joint ownership control is however manifested in both crisis-stricken and non-crisis country subsidiaries as well as in their interaction effect.     

IS THERE EVIDENCE OF A WAGE PENALTY TO FEMALE PART‐TIME EMPLOYMENT IN SOUTH AFRICA?

In this paper, we investigate female part‐time employment in South Africa. Using household survey data for South Africa from 1995 to 2004, we show that women are over‐represented in part‐time employment, and that the growth in part‐time work has been an important feature of the feminisation of the labour force. In contrast to many studies of part‐time work in other countries, however, we find evidence of a significant wage premium to female part‐time employment. The premium is also robust to fixed effects estimations using Labour Force Survey panel data from 2001 to 2004, where controlling for unobservable differences increases its size. The premium persists with different hourly thresholds defining part‐time employment and when we account for possible reporting errors in hours worked.     

Gender equality still on the European agenda—but for how long?

While the momentum has certainly not yet disappeared from the gender equality agenda within Europe, the impact of that agenda remains patchy. Progress within individual member states has been significant but not always steady or cumulative. At the European level more attention has been paid to the gender pay gap but policy initiatives remain weak. The loss of the equal opportunities pillar in the new employment guidelines puts this momentum at risk but the new phase still includes commitments to an integrated strategy of gender mainstreaming and equal opportunities.     

The ups and downs of European gender equality policy

In 2003, equal opportunities policy in the European Union suffered both ups and downs. New opportunities came in the guise of the hotly contested new directive on gender equality outside the field of employment, in the invitation to present the first of an annual report on equality between women and men to the Spring Council, in the consolidation of gender mainstreaming within the second round of the National Action Plans on social inclusion and in the new commitments to ‘substantial reductions by 2010’ in gender gaps in employment, unemployment and pay that were included in the new employment guidelines in 2003. These new guidelines presented, however, a major challenge to gender equality as the new phase of the European Employment Strategy dispensed with the four pillars, and therefore the equal opportunities pillar. Instead gender equality became just one of 10 new guidelines. In December the launch of the Employment Taskforce report appeared to push employment policy back more to a ‘full employment with flexibility’ approach and away from concerns with job quality. The focus was therefore more on the integration of women into employment rather than on closing the equality gap.     

The subordination of the gender equality objective: the National Reform Programmes and ‘making work pay’ oplicies

The streamlining of the Lisbon strategy has introduced new integrated guidelines for economic policy and employment strategy and a new report format––the National Reform Programme. In the first year of this new reporting mechanism, Member States have paid less attention to gender mainstreaming and gender equality objectives, not least because the gender equality guideline has been removed. Streamlining has further exposed the narrow and instrumental focus on gender equality measures in the Lisbon process as a means of raising the employment rate rather than a broader concern for equal opportunity. This narrow gender equality approach also dilutes the efficacy of the economic and employment policies that are advanced. Some positive steps to advance gender equality continue to be taken, but the reforms are partial, uneven and coexist with negative developments. We illustrate this with an evaluation of the policy trajectory in relation to the ‘making work pay’ agenda for low‐waged workers (tax/benefit reform, minimum wages, childcare and parental leave). We conclude that this latest reform to the Lisbon process has exposed the enormous amount of political work and capacity building that is needed to mainstream gender issues across the whole field of economic, employment and social policies.     

Long run money demand in the EU: Evidence for area-wide aggregates

Long-run properties of EU-wide money aggregates are analysed. For each of the three aggregates considered-Currency, M1 and M3H-it is possible to obtain cointegrating relationships with GDP and interest rates (long or short term market interest rates). Results are not improved when traditional aggregates, obtained by aggregating existing national aggregates, are extended by the inclusion of various measures of Cross-Border Holdings. Specific attention is also paid to aggregation issues and the relative performance of area-wide and national equations. The results show that aggregation bias is not a major problem and that the relatively good area-wide performance is largely a consequence of a statistical averaging effect.gf.gfagan.hg.eunet.deBoth authors are in the Stage Three Division of the Monetary, Economics and Statistics Department of the European Monetary Institute. The authors would like to thank colleagues at the EMI and participants at an EMI conference on EU money demand, held in 1995, for helpful comments and suggestions. Comments received from participants in the 1997 Econometric Society European Meeting and in the Workshop on Money Demand at Berlin Humboldt Universität in 1997 are also gratefully acknowledged. The final version benefited from comments by the editors and two anonymous referees. Opinions expressed in the paper are only those of the authors and do not necessarily represent the views of the EMI.     

Comparative Industrial Relations Research: Towards Reversing the Gender Bias

This paper seeks to begin the reversal of the gender bias in comparative industrial relations research which is still focused on comparing and contrasting the regimes that cover mainly male manual workers. There is little systematic evidence on industrial relations practices in private or even public services, for non-manual workers or for atypical workers. These employment areas are central for women's employment and are of increasing importance in the labour market, but few attempts have been made to compare industrial relations regimes by reference to the protection they afford to women. Taking into account industrial relations practice in these areas can change significantly the classification and estimated coverage of collective bargaining systems. By 'mainstrearning' gender issues it also becomes clear that current macroeconomic policy proposals have major gender implications that are ignored in current debates