ALBERT

Notes: Abstract This paper provides a comprehensive account of the regulations governing the systems of unemployment support and social assistance in post-communist Poland. To provide a solid foundation for a further discussion of these issues, the paper extensively characterizes the Polish labor force in terms of the prevalence and duration of unemployment. A final aspect of our empirical analysis concerned the question of what are the main sources of personal income for labor force participants, unemployed workers and long-term unemployed workers. In conclusion, we argue for a reform of the Polish systems of income support that separates the objectives of employment growth and poverty alleviation, and that improves upon the implementation of support schemes.

Notes: Abstract In this paper we provide an account of most of the passive labor market policies (unemployment compensation, social assistance, state social support and the pension system) in the Czech Republic during the 1990–1996 period. The eligibility requirements and benefit levels are described in great detail. Using Labor Force Survey data, we compare the characteristics of unemployed people receiving unemployment benefits with those receiving social assistance and those not receiving any benefits and we find significant differences in their characteristics. Finally, we provide an analysis of the work disincentive effects of the unemployment and social assistance benefits by comparing these benefits to market wages and by analyzing the effect of being in the system on the duration of unemployment of two cohorts of unemployed in 1994 and 1995. We find that social assistance benefits are fairly generous for low income families with more children, individuals with these characteristics have a higher probability of receiving social assistance and they tend to stay unemployed longer than those people with relatively fewer dependants. We conclude that the social assistance scheme seems to be having some disincentive effects for at least one group in the population.

Notes: Abstract The topic of this paper is the transition from unemployment benefit schemes to social assistance in seven European OECD countries. The unemployment benefit schemes are formally quite different in the seven countries. Most are mandatory but Denmark and Sweden have voluntary unemployment insurance and Finland has a mandatory basic scheme with a voluntary income related component on top of that. Self employed people can join the U.B. schemes in the 3 Scandinavian countries. All the U.B. schemes have working or contribution conditions to be met by the members in order to obtain eligibility for benefits. These conditions are relatively tight in the Netherlands, France and Sweden and relatively easy in Denmark and Great Britain with Germany and Finland in between (based on rules in 1994–95). Recent developments in several countries have been to tighten the access conditions to the U.B. schemes and from 1997 Denmark will be ‘on line’ with Germany. The Netherlands have tightened the access criteria very significantly in 1995. There is a considerable variation as far as the duration of the unemployment benefit period is concerned. Sweden has a benefit period in fact without effective time limitations. The Danish benefit period is also very long, 7 years now being reduced to 5 years. 5 years is also the maximum duration in the Netherlands and in France, but only after many years of work and after a relatively high age has been reached. The maximum period in Germany, 22/3 years, also requires a long work history and a relatively high age. Finland and Great Britain have uniform benefit period (just as in Denmark and Sweden), in Finland it is appr. 2 years (longer for elderly unemployed just as in Sweden and Denmark) and in Great Britain it was 1 year but from October 1996 it was reduced to 1/2 year. The differences in the duration of the benefit periods between the seven countries are very considerable. As already mentioned, there has been a tendency to reduce the benefit period in several countries. Such a change is also being considered for the ‘never ending’ benefit period in the Swedish U.B. scheme. The benefit formula is purely flat rate in Great Britain and income related in the other countries. There is a maximum benefit level in 5 of these countries, but not in Finland, where the compensation is stepwise decreasing with increasing income. In the 5 countries with income related benefits and a maximum benefit level, this maximum level is reached at a relatively low income in Denmark (2/3 APW income) and Sweden (close to APW income) and at a relatively high income in the Netherlands (appr. 1.5 APW income) and Germany (appr. 1.7 APW income) and at a very high income level in France. France is the only country among the 7, where the benefits after an initial period are being reduced regularly (every 4 months) in the benefit period down to a minimum level. Sweden and Germany have reduced the benefit levels in recent years. Denmark has the highest gross compensation percentage, 90, in relation to lost income, but it is only effective over a relatively narrow income interval, from approx. 133,000 DKK to 162,000 DKK (1996), ‘between’ the min. and max. U.B. rates. According to the 3 institutional criteria applied here, access to the schemes, duration of the benefit period and the type of benefit formula, the U.B. schemes of the seven countries studied are very different. The exit scheme from U.B is social assistance in most of the countries, but not in Germany, where it is possible to continue in a scheme with lower compensation but still income related. For Sweden it is hardly meaningful to speak of an ‘exit scheme’ when the U.B. insurance is without effective time limitations. The exit schemes in the other countries are all characterized by having flat rate benefits. All the exit schemes are means tested and this is a crucial difference to the U.B. schemes, and they are without time limitations. Means testing and no effective time limitations are usual characteristics for social assistance and social assistance like schemes. In all the countries, except in Denmark and Sweden, there is ‘topping-up’ from social assistance to a guaranteed minimum level disregarding the income sources. In the two Scandinavian countries mentioned, a ‘social event’, i.e. illness or unemployment, is required in order to be eligible for social assistance benefits. Net replacement rates are used to illustrate the levels of compensation within the U.B. and the S.A. schemes, to identify possible incentives problems, and to illustrate the economic implications of the transition from U.B. to S.A. schemes. The net replacement rates presented are calculated by using the ‘disposable income after net housing costs’ income concept. The calculations include several family types, singles and couples with and without children and for the couples with one or two incomes. A general result but with some modifications, cf. the following, could be that the U.B. based replacement rates usually are higher than the S.A. based, but that the difference is minor when the U.B. scheme is flat rate or income related with a maximum benefit level being reached at a relatively low income, for Great Britain there are in several cases no difference at all. The ‘topping-up’ has the implication that the U.B. and S.A. based replacement rates are often identical at the lower end of the income scale. The very high S.A. based replacement rates (well over 100 per cent) often seen for Denmark and Sweden at low income levels do not necessarily imply, that social assistance in those two countries is more generous than in the other countries, it is very much an effect of not having more or less automatic ‘topping-up’ to a guaranteed minimum income level when earned income is low. The single parent family type seems to have incentives problems at relatively low income levels in most of the countries, especially when receiving U.B., she may temporarily be caught in the ‘unemployment trap’. The one earner couple with children may also be exposed to the ‘unemployment trap’ but on a more permanent basis. The S.A. based replacement rates for this family type are extraordinarily high (and higher than the U.B. based) in Denmark and Sweden, where this family type, however, is very rare. For the two earner family (where one of the spouses always has earned income) the means testing of S.A. makes an impact on the S.A. based net replacement rates, they are in most cases substantially lower than the U.B. based. The results of the net replacement calculations indicate no or only minor economic implications by a transition from U.B. to S.A. in the lower end of the income scale while the effect in most cases will be more substantial in the higher end of the income scale. This is not always the case in Sweden and Denmark where S.A. for some family types are preferable to U.B. and where the difference in other cases may be so small, that it implies incentives problems for joining the voluntary U.B. scheme. The calculation of ‘long term’ (5 years) net replacement rates for families at a low income level (the point in the income distribution where only 5 per cent have lower income) and only including one earner families, reveals that either the long benefit period in the U.B. scheme (Sweden and Denmark) or ‘topping-up’ (Germany, the Netherlands and Great Britain) generate ‘constant’ net replacement rates, and quite high ones, at low income levels. Only in France and to some extent in Finland will there be a decrease in net replacement rates over time. Most of the differences concerning the duration of unemployment benefit periods and to some extend the benefit formulas have no effect on the long term net replacement rates. At higher income levels the time limitations in the U.B. schemes will be visible again, except in Great Britain where the U.B. and S.A. benefits are almost identical. It is not possible to point out a ‘worst’ country wi

Notes: Abstract. This paper utilizes a new data set, compiled by Citizenship and Immigration Canada, Revenue Canada and Statistics Canada, to examine the unemployment experience of Canadian immigrant cohorts over the time period 1980 to 1988. Using the records of unemployment insurance benefits of persons who immigrated to Canada in those years and who filed income tax returns, the unemployment experiences of those people are compared by landing year, gender, level of education, language ability, and country of last permanent residence. The determinants of the proportion of each immigrant cohort that received unemployment insurance benefits are estimated by relating the proportions to landing year, duration of time in Canada, and labour market conditions. Briefly, we find no obvious influences on UI receipt behaviour following the immigration reforms of 1982. However, the recession of 1981–82 had a major impact on incomes which did not recover until 5 or 6 years later. Nevertheless, more generous UI benefits did raise slightly the likelihood of UI receipts.

Notes: Abstract Methylmercury (MeHg) concentrations and production rates were examined along with sulfur biogeochemistry in Everglades sediments in March, July and December, 1995, as part of a large, multi-investigator study, the Aquatic Cycling of Mercury in the Everglades (ACME) project. The sites examined constitute a trophic gradient, generated from agricultural runoff, across the Everglades Nutrient Removal (ENR) Area, which is a re-constructed wetland, and Water Conservation Areas (WCA) 2A, 2B and 3 in the northern Everglades. MeHg concentrations and %MeHg (MeHg as a percent of total Hg) were lowest in the more eutrophic areas and highest in the more pristine areas in the south. MeHg concentrations ranged from 〈0.1 ng gdw-1 sediment in the ENR to 5 ng gdw-1 in WCA3 sediments; and MeHg constituted 〈0.2% of total Hg (HgT) in ENR, but up to about 2% in two sites in WCA2B and WCA3. Methylation rates in surficial sediments, estimated using tracer-level injections of203 Hg(II) into intact sediment cores, ranged from 0 to 0.12 d-1, or about 1 to 10 ng g-1 d-1when the per day values are multiplied by the ambient total Hg concentration. Methylation was generally maximal at or within centimeters of the sediment surface, and was never observed in water overlying cores. The spatial pattern of MeHg production generally matched that of MeHg concentration. The coincident distributions of MeHg and its production suggest that in situ production controls concentration, and that MeHg concentration can be used as an analog for MeHg production. In addition, the spatial pattern of MeHg in Everglades sediments matches that in biota, suggesting that MeHg bioaccumulation may be predominantly a function of the de novo methylation rate in surficial sediments. Sulfate concentrations in surficial pore waters (up to 400 µm), microbial sulfate-reduction rates (up to 800 nm cc-1 d-1) and resultant pore water sulfide concentrations (up to 300 µm) at the eutrophic northern sites were all high relative to most freshwater systems. All declined to the south, and sulfate concentrations in WCA2B and in central WCA3 resembled those in oligotrophic lakes (50–100 µm). MeHg concentration and production were inversely related to sulfate reduction rate and pore water sulfide. Control of MeHg production in the northern Everglades appears to mimic that in an estuary, where sulfate concentrations are high and where sulfide produced by microbial sulfate reduction inhibits MeHg production.

Notes: Abstract The purpose of this study was to investigate the effect of sewage treatment on total mercury (THg) and methylmercury (MeHg) concentrations in domestic effluents and the contribution of urban sewage treatment facilities to THg and MeHg in rivers. We determined the concentrations of THg and MeHg in unfiltered samples of untreated and treated domestic sewage from the three treatment facilities and receiving river water within the City of Winnipeg. The concentrations of THg in the Red and Assiniboine rivers ranged from 3–31 ng/L. THg was related positively to suspended sediment concentrations in the rivers. The concentrations of MeHg in these rivers were usually 0.2–0.3 ng/L. THg concentrations in raw sewage varied widely, from 2–150 ng/L. Treatment removed an average of 88% of this mercury. MeHg concentrations in raw sewage were 0.5–4.3 ng/L, however, after treatment at two treatment facilities, MeHg was greatly reduced, usually to 0.1–0.4 ng/L. Most treated sewage, therefore, had MeHg concentrations that were similar to levels in the receiving rivers and the effect of discharged effluent was usually a change of about 2% or less on concentrations in the rivers. However, one of the facilities (the West End plant) was discharging higher concentrations of MeHg, up to 2 ng/L, causing calculated increases of up to 11% in the concentration of MeHg in the Assiniboine River.

Notes: Abstract The input and output flux data of total Hg (THg) and methylmercury (MeHg) from three catchments located in different geographical regions in Sweden and one catchment in southern Finland were compared to elucidate the role of current atmospheric Hg/MeHg deposition with regard to waterborne Hg/MeHg output. There was a negative co-variaton between the open field THg inputs and the ratio of THg output to open field input. The highest ratio (and lowest input) occurring in N. Sweden and S. Finland, while the lowest output ratio (and highest inputs) occurred in southwest Sweden. A much larger variation was found in the ratio of output to open field input for MeHg (14 to 160%). Examinations of MeHg input/output data in relation to catchment charateristics suggest that riparian peat, mires and wet organic soil contributed to the large MeHg output from certain catchments, probably due to in situ production of MeHg. This finding is consistent with other studies which have found that catchment characteristics such as wetland area, flow pathways, seasonal temperature and water flow are important in controlling the output of MeHg. These catchment characteristics govern the fate of the contemporary input of Hg and MeHg as well as the mobilization of the soil pools.

Notes: Abstract The accumulation of methylmercury (MeHg) to an oligochaete worm Lumbriculus variegatus (Müller) was measured in two different lake sediments in the laboratory. 14C-labelled MeHg was added to sediments at the nominal concentration of 95 ng/g dw sediment. Groups of six oligochaete worms were exposed in glass beakers to 35 g of spiked sediment for 14 days. The two sediments had organic carbon concentrations of 3.4% and 9.9% and natural selenium concentrations of 1.45 and 0.28 mg/kg (dw), respectively. After two weeks exposure, both the accumulation rate of MeHg and the body residue in the worms were much lower in the sediment having a high organic carbon content. The effect of selenium concentration in the sediment on bioaccumulation of MeHg in Lumbriculus variegatus was measured in one sediment (organic carbon 3.4% and Se 1.45 mg/kg) by adding sodiumselenite (Na2SeO3) at different concentrations. The added amounts of selenium were 0, 0.1, 0.5, 2.5, 15.0, and 50.0 mg Se/kg dry sediment. In this exposure the nominal concentration of MeHg was 102 ng/g dw sediment. The two lowest selenium concentrations did not affect the bioaccumulation of MeHg. But, the dose of 2.5 mg Se/kg resulted in a 25% reduction in the body residue after two weeks exposure. When 15 and 50 mg Se/kg were added to the sediment the accumulation of MeHg in the organisms was decreased by 75% and 86%, respectively, as compared to the reference.

Notes: Abstract To understand the accumulation of inorganic mercury and methylmercury at the base of the estuarine food chain, phytoplankton (Thalassiosira weissflogii) uptake and mercury speciation experiments were conducted. Complexation of methylmercury as methylmercury-bisulfide decreased the phytoplankton uptake rate while the uptake rate of the methylmercury-cysteine and -thiourea complexes increased with increasing complexation by these ligands. Furthermore, our results indicated that while different ligands influenced inorganic mercury/methylmercury uptake by phytoplankton cells, the ligand complex had no major influence on either where the mercury was sequestered within the phytoplankton cell nor the assimilation efficiency of the mercury by copepods. The assimilation efficiency of inorganic mercury/methylmercury by copepods and amphipods feeding on algal cells was compared and both organisms assimilated methylmercury much more efficiently; the relative assimilation efficiency of methylmercury to inorganic mercury was 2.0 for copepods and 2.8 for amphipods. The relative assimilation is somewhat concentration dependent as experiments showed that as exposure concentration increased, a greater percentage of methylmercury was found in the cytoplasm of phytoplankton cells, resulting in a higher concentration in the copepods feeding on these cells. Additionally, food quality influenced assimilation by invertebrates. During decay of a T. weissflogii culture, which served as food for the invertebrates, copepods were increasingly less able to assimilate the methylmercury from the food, while even at advanced stages of decay, amphipods were able to assimilate mercury from their food to a high degree. Finally, fish feeding on copepods assimilated methylmercury more efficiently than inorganic mercury owing to the larger fraction of methylmercury found in the soft tissues of the copepods.

Notes: Abstract A microwave technique for digesting foliage samples was developed and evaluated for quantifying low levels of Hg by cold vapor atomic fluorescence spectroscopy, CVAFS. The method meets three criteria: (1) to digest all sample material completely and consistently, (2) to reduce sample digestion time to less than one hour, and (3) to maintain a low analytical blank. Mean recovery of NIST standards was 90±6%. Samples that were analyzed by this technique and by Instrumental Neutron Activation Analysis compared within 15%. This method also compared within 15% of hot acid digestion methods on samples prepared and analyzed by CVAFS at different laboratories in the First International Mercury in Foliage Intercomparison of Methods (FIM)2. The largest source of variability in all of the interlaboratory comparisons was sample inhomogeneity rather than analytical error.